Asus P5Q-EM DO User Manual

Motherboard

P5Q-EM DO

P5Q-EM DO.indb 1 12/9/08 12:32:26 PM

E4365

Second Edition V2
December 2008

Copyright © 2008 ASUSTeK Computer Inc. All Rights Reserved.

No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK Computer Inc. (“ASUS”).

Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the

product is defaced or missing.

ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY
DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE,
AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO
RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS
MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Products and corporate names appearing in this manual may or may not be registered trademarks or

copyrights of their respective companies, and are used only for identication or explanation and to the
owners’ benet, without intent to infringe.

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i

Contents

Notices .......................................................................................................................iv

Safety information ....................................................................................................... v

About this guide ......................................................................................................... vi

P5Q-EM DO specications summary ..................................................................... viii

Chapter 1: Product introduction

1.1 Welcome! ....................................................................................................1-1

1.2 Package contents.......................................................................................1-1

1.3 Special features..........................................................................................1-1

1.3.1 Product highlights ...................................................................................... 1-1

1.3.2 ASUS Features ......................................................................................... 1-3

1.3.3 ASUS Special Features .............................................................................1-4

1.4 Before you proceed ...................................................................................1-5

1.5 Motherboard overview ............................................................................... 1-6

1.5.1 Placement direction ................................................................................... 1-6

1.5.2 Screw holes ............................................................................................... 1-6

1.5.3 Motherboard layout .................................................................................... 1-7

1.6 Central Processing Unit (CPU) .................................................................1-8

1.6.1 Installing the CPU ......................................................................................1-8

1.6.2 Installing the CPU heatsink and fan ..........................................................1-11

1.6.3 Uninstalling the CPU heatsink and fan .................................................... 1-12

1.7 System memory .......................................................................................1-13

1.7.1 Overview .................................................................................................. 1-13

1.7.2 Memory congurations ............................................................................. 1-14

1.7.3 Installing a DIMM .....................................................................................1-19

1.7.4 Removing a DIMM ...................................................................................1-19

1.8 Expansion slots........................................................................................1-20

1.8.1 Installing an expansion card .................................................................... 1-20

1.8.2 Conguring an expansion card ................................................................1-20

1.8.3 Interrupt assignments .............................................................................. 1-21

1.8.4 PCI slots ................................................................................................... 1-23

1.8.5 PCI Express x1 slot .................................................................................. 1-23

1.8.6 PCI Express x16 slot ................................................................................ 1-23

1.9 Jumper ......................................................................................................1-24

1.10 Connectors ...............................................................................................1-26

1.10.1 Rear panel connectors ............................................................................. 1-26

1.10.2 Internal connectors .................................................................................. 1-28

Chapter 2: BIOS setup

2.1 Managing and updating your BIOS ..........................................................2-1

2.1.1 Creating a bootable oppy disk .................................................................. 2-1

2.1.2 ASUS EZ Flash 2 utility .............................................................................. 2-2

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ii

Contents

2.1.3 AFUDOS utility ........................................................................................... 2-3

2.1.4 ASUS CrashFree BIOS 3 utility ................................................................. 2-5

2.1.5 ASUS Update utility ................................................................................... 2-7

2.2 BIOS setup program ................................................................................2-10

2.2.1 BIOS menu screen ....................................................................................2-11

2.2.2 Menu bar ...................................................................................................2-11

2.2.3 Navigation keys .........................................................................................2-11

2.2.4 Menu items .............................................................................................. 2-12

2.2.5 Sub-menu items ....................................................................................... 2-12

2.2.6 Conguration elds ..................................................................................2-12

2.2.7 Pop-up window ........................................................................................ 2-12

2.2.8 Scroll bar .................................................................................................. 2-12

2.2.9 General help ............................................................................................ 2-12

2.3 Main menu ................................................................................................2-13

2.3.1 System Time ............................................................................................ 2-13

2.3.2 System Date ........................................................................................... 2-13

2.3.3 Legacy Diskette A .................................................................................... 2-13

2.3.4 SATA1-6 ................................................................................................... 2-14

2.3.5 Storage Conguration .............................................................................. 2-15

2.3.6 System Information .................................................................................. 2-16

2.4 Ai Tweaker menu ......................................................................................2-17

2.4.1 Ai Overclock Tuner .................................................................................. 2-17

2.4.2 FSB Strap to North Bridge ......................................................................2-18

2.4.3 DRAM Frequency ................................................................................... 2-18

2.4.4 Congure DRAM Timing by SPD ............................................................ 2-18

2.4.5 CPU Spread Spectrum ........................................................................... 2-18

2.4.6 PCIE Spread Spectrum ........................................................................... 2-18

2.4.7 CPU Clock Skew ..................................................................................... 2-18

2.4.8 NB Clock Skew .......................................................................................2-19

2.4.9 CPU Voltage ..........................................................................................2-19

2.4.10 CPU PLL Voltage .................................................................................... 2-19

2.4.11 FSB Termination Voltage .........................................................................2-19

2.4.12 DRAM Voltage ........................................................................................2-19

2.4.13 NB Voltage .............................................................................................. 2-19

2.4.14 PCIE SATA Voltage ................................................................................. 2-20

2.5 Advanced menu .......................................................................................2-21

2.5.1 CPU Conguration ................................................................................... 2-21

2.5.2 Chipset ..................................................................................................... 2-23

2.5.3 Onboard Device Conguration ................................................................. 2-26

2.5.4 USB Conguration ...................................................................................2-27

2.5.5 PCIPnP ....................................................................................................2-28

2.5.6 TPM Conguration ................................................................................... 2-29

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iii

Contents

2.5.7 Intel® VT-d Conguration .......................................................................... 2-29

2.5.8 Intel® TXT(LT) Conguration .................................................................... 2-30

2.6 Power menu .............................................................................................. 2-31

2.6.1 Suspend Mode ........................................................................................ 2-31

2.6.2 Repost Video on S3 Resume .................................................................. 2-31

2.6.3 ACPI 2.0 Support .................................................................................... 2-31

2.6.4 ACPI APIC Support ................................................................................. 2-31

2.6.5 APM Conguration ................................................................................... 2-32

2.6.6 Hardware Monitor .................................................................................... 2-34

2.7 Boot menu ................................................................................................2-35

2.7.1 Boot Device Priority ................................................................................. 2-35

2.7.2 Boot Settings Conguration .....................................................................2-36

2.7.3 Security .................................................................................................... 2-37

4.6.1 Boot Device Priority ................................................................................. 2-37

4.6.1 Boot Device Priority ................................................................................. 2-38

2.8 Tools menu ............................................................................................... 2-39

ASUS EZ Flash 2 ........................................................................................................2-39

2.9 Exit menu .................................................................................................. 2-40

2.10 Intel® ME conguration ............................................................................ 2-41

2.10.1 Change Intel® ME password .................................................................... 2-41

2.10.2 Intel® ME Conguration ............................................................................ 2-42

2.10.3 Exit menu ................................................................................................. 2-44

Chapter 3: Software support

3.1 Installing an operating system .................................................................3-1

3.2 Support DVD information .......................................................................... 3-1

3.2.1 Running the Support DVD ......................................................................... 3-1

3.2.2 Drivers menu .............................................................................................. 3-2

3.2.3 Utilities menu ............................................................................................. 3-3

3.2.4 Make Disk menu ........................................................................................3-5

3.2.5 Manual menu .............................................................................................3-6

3.2.6 ASUS Contact information ......................................................................... 3-6

3.2.7 Other information .......................................................................................3-7

3.3 Creating a RAID driver disk.......................................................................3-9

3.3.1 Creating a RAID driver disk without entering the OS ................................. 3-9

3.3.2 Creating a RAID driver disk in Windows® .................................................. 3-9

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iv

Notices

Federal Communications Commission Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:

•

This device may not cause harmful interference, and

•

This device must accept any interference received including interference that may cause
undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:

•

Reorient or relocate the receiving antenna.

•

Increase the separation between the equipment and receiver.

•

Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.

•

Consult the dealer or an experienced radio/TV technician for help.

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.

This class B digital apparatus complies with Canadian ICES-003.

The use of shielded cables for connection of the monitor to the graphics card is required

to assure compliance with FCC regulations. Changes or modications to this unit not

expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.

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v

DO NOT throw the mercury-containing button cell battery in municipal waste.
This symbol of the crossed out wheeled bin iindicates that the battery should not
be placed in municipal waste.

Safety information

Electrical safety

•

To prevent electrical shock hazard, disconnect the power cable from the electrical

outlet before relocating the system.

•

When adding or removing devices to or from the system, ensure that the power cables
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.

•

Before connecting or removing signal cables from the motherboard, ensure that all
power cables are unplugged.

•

Seek professional assistance before using an adpater or extension cord. These
devices could interrupt the grounding circuit.

•

Make sure that your power supply is set to the correct voltage in your area. If you are
not sure about the voltage of the electrical outlet you are using, contact your local
power company.

•

If the power supply is broken, do not try to x it by yourself. Contact a qualied service

technician or your retailer.

Operation safety

•

Before installing the motherboard and adding devices on it, carefully read all the manuals
that came with the package.

•

Before using the product, make sure all cables are correctly connected and the power
cables are not damaged. If you detect any damage, contact your dealer immediately.

•

To avoid short circuits, keep paper clips, screws, and staples away from connectors,
slots, sockets and circuitry.

•

Avoid dust, humidity, and temperature extremes. Do not place the product in any area
where it may become wet.

•

Place the product on a stable surface.

•

If you encounter technical problems with the product, contact a qualied service

technician or your retailer.

DO NOT throw the motherboard in municipal waste. This product has been
designed to enable proper reuse of pats and recycling. This symbol of the
crossed out wheeled bin indicates that the product (electrical and electronic
equipment) should not be placed in municipal waste. Check local regulations for
disposal of electronic products.

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vi

About this guide

This user guide contains the information you need when installing and conguring the

motherboard.

How this guide is organized

This manual contains the following parts:

• Chapter 1: Product introduction

This chapter describes the motherboard features and the new technologies it supports.
It also lists the hardware setup procedures that you have to perform when installing
system components. It includes description of the jumpers and connectors on the
motherboard.

• Chapter 2: BIOS setup

This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.

• Chapter 3: Software support

This chapter describes the contents of the support DVD that comes with the
motherboard package.

Where to nd more information

Refer to the following sources for additional information and for product and software
updates.

1. ASUS websites

The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.

2. Optional documentation

Your product package may include optional documentation, such as warranty yers,

that may have been added by your dealer. These documents are not part of the
standard package.

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vii

Conventions used in this guide

To make sure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.

Typography

Bold text Indicates a menu or an item to select.

Italics

Used to emphasize a word or a phrase.

<Key> Keys enclosed in the less-than and greater-than sign means

that you must press the enclosed key.

Example: <Enter> means that you must press the Enter or
Return key.

<Key1>+<Key2>+<Key3> If you must press two or more keys simultaneously, the key

names are linked with a plus sign (+).

Example: <Ctrl+Alt+D>

Command Means that you must type the command exactly as shown,

then supply the required item or value enclosed in brackets.

Example: At the DOS prompt, type the command line:

afudos /i[lename]

afudos /iP5QEMDO.ROM

DANGER/WARNING: Information to prevent injury to yourself

when trying to complete a task.

CAUTION: Information to prevent damage to the components

when trying to complete a task.

NOTE: Tips and additional information to help you complete a

task.

IMPORTANT: Instructions that you MUST follow to complete a

task.

P5Q-EM DO.indb 7 12/9/08 12:32:40 PM

viii

P5Q-EM DO specications summary

(continued on the next page)

CPU

LGA775 socket for Intel® Core™2 Extreme / Core™2 Quad
/ Core™2 Duo / Pentium® dual-core / Celeron® dual-core /
Celeron® processor*
Compatible with Intel® 05B/05A/06 processors
Support Intel® 45nm Multi-core CPU.

* Refer to www.asus.com for Intel CPU support list

Chipset

Intel® Q45 / ICH10DO with Intel® Active Management
Technology

System Bus

1333 /1066 / 800 MHz

Memory

4 x DIMM, max. 16GB, DDR2 800/667 MHz, non-ECC, un-buffered

memory
Dual channel memory architecture

* Due to the memory address limitation on 32-bit Windows OS,

when you install 4GB or more memory on the motherboard, the
actual usable memory for the OS can be about 3GB or less. For
effective use of memory, we recommend that you install a 64-bit
Windows OS when having 4GB or more memory installed on the
motherboard..

Expansion Slots

1 x PCIe x16 slot
2 x PCIe x1 slots
1 x PCI slot

VGA

Intel® 4500 integrated

High Denition Video Processing with
D-SUB Max resolution to 2048 x 1536 (@75Hz);
DVI Max resolution to 1920 x 1080 (@60HZ);

HDMI Max resolution to 1920 x 1080 (@60HZ)*

Max. UMA shared memory of 1894MB**

* The VGA card that supports HDMI is purchased separately.

** Th e HDMI Max resolution is supported only when installed 1G

memory.

Storage

Southbridge

- 6 x SATA 3.0 Gb/s ports

- Support RAID 0, 1, 5, and 10

Mavell® 6102 PATA controller

- 1 x UltraDMA 133/100/66 for up to 2 PATA devices

LAN

Intel® 882567LM PCIe Gigabit LAN Controller

Audio

Realtek® ALC1200 8-channel High Denition Audio CODEC

- Support Jack-detection, Enumeration, Multi-streaming

IEEE 1394

LSI® L-FW3227 1394 controller supports 2 x IEEE 1394a ports

(one at midboard; one at back panel)

TPM

Intel® integrated TPM support

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ix

P5Q-EM DO specications summary

ASUS Features

ASUS Quiet Thermal Solution:

- ASUS AI Gear 2

- ASUS Advanced Q-Fan
ASUS Crystal Sound

- Noise Filter
ASUS EZ DIY:

- ASUS Q-Connector

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 2

ASUS Exclusive
Overclocking Features

Precision Tweaker:

- vCore: Adjustable CPU voltage at 0.00625 increment

- vDIMM: 4-step DRAM voltage control
SFS (Stepless Frequency Selection):

- FSB tuning from 200 MHz up to 800 MHz at 1MHz
increment

- Memory tuning from 667 MHz up to 1066 MHz

- PCI Express frequency tuning from 100 MHz up to
180 MHz at 1 MHz increment

Overclocking Protection:

- ASUS C.P.R. (CPU Parameter Recall)ASUS C.P.R. (CPU Parameter Recall)

Other Features

ASUS MyLogo 2

BIOS Features

2 x 16Mb Flash ROM, AMI BIOS, PnP, DMI2.0, WfM2.0,
SM BIOS 2.3, ACPI 2.0a.

Manageability

WfM 2.0, DMI 2.0, WOL by PME, WOR by PME, PXE
Support Intel® AMT technology

Back Panel I/O Ports

1 x PS/2 keyboard port
1 x PS/2 mouse port
1 x DVI port
1 x VGA port
1 x IEEE 1394a connector
1 x RJ45 port
4 x USB 2.0/1.1 ports
1 x ME Switch
8-channel Audio I/O ports

Internal Connectors

4 x USB 2.0 connectors support additional 8 USB ports
1 x Floppy disk drive connector
1 x IDE connector
6 x Serial ATA connectors
1 x COM connector
1 x CPU Fan connector
1 x Chassis Fan connector
1 x Power Fan connector
1 x IEEE1394a connector
1 x Front panel audio connector
1 x S/PDIF Out Header
1 x Chassis intrusion connector
1 x CD audio in connector
1 x 24-pin ATX Power connector
1 x 4-pin ATX 12 V Power connector
1 x System panel connector (Q-Connector)

(continued on the next page)

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x

Support DVD Contents

Drivers
ASUS PC Probe II
ASUS Update
Intel® System Defense Utility
Anti-virus software (OEM version)
Intel® IT Director

Form Factor

microATX form factor: 9.6” x 9.6” (24.4 cm x 24.4 cm)

*Specications are subject to change without notice.

P5Q-EM DO specications summary

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1

Chapter1: Product

introduction

This chapter describes the motherboard features
and the new technologies it supports. It also lists
the hardware setup procedures that you have
to perform when installing system components.
It includes description of the jumpers and
connectors on the motherboard.

P5Q-EM DO.indb 1 12/9/08 12:32:43 PM

1.1 Welcome! ....................................................................................................1-1

1.2 Package contents.......................................................................................1-1

1.3 Special features..........................................................................................1-1

1.4 Before you proceed ...................................................................................1-5

1.5 Motherboard overview ............................................................................... 1-6

1.6 Central Processing Unit (CPU) .................................................................1-8

1.7 System memory .......................................................................................1-13

1.8 Expansion slots........................................................................................1-20

1.9 Jumper ......................................................................................................1-24

1.10 Connectors ...............................................................................................1-26

ASUS P5Q-EM DO

Chapter summary

1

P5Q-EM DO.indb 2 12/9/08 12:32:44 PM

ASUS P5Q-EM DO 1-1

1.1 Welcome!

Thank you for buying an ASUS® P5Q-EM DO motherboard!

The motherboard delivers a host of new features and latest technologies, making it another
standout in the long line of ASUS quality motherboards!

Before you start installing the motherboard, and hardware devices on it, check the items in
your package with the list below.

If any of the above items is damaged or missing, contact your retailer.

1.2 Package contents

Check your motherboard package for the following items.

Motherboard ASUS P5Q-EM DO

Cables Serial ATA power and signal cables for 2 devices
1 x Ultra DMA 133/100/66 cable

Accessories I/O shield
1 x ASUS 3 in 1 Q-Connector Kit (USB, 1394, system
panel; Retail version only)

Application DVD ASUS motherboard support DVD

Documentation User guide

1.3 Special features

1.3.1 Product highlights

Green ASUS

This motherboard and its packaging comply with the European Union’s Restriction on the

use of Hazardous Substances (RoHS). This is in line with the ASUS vision of creating

environment-friendly and recyclable products/packaging to safeguard consumers’ health

while minimizing the impact on the environment.

P5Q-EM DO.indb 1 12/9/08 12:32:47 PM

1-2 Chapter 1: Product introduction

Intel® Core™2 Extreme / Core™ 2 Quad / Core™2 Duo
Processor Support

This motherboard supports the latest Intel® Core™ 2 Extreme / Core™ 2 Quad / Core™ 2
Duo processors in the LGA775 package. It is excellent for multi-tasking, multi-media and

enthusiastic gamers with 1333 / 1066 / 800 MHz FSB. The Intel® Core™ 2 series processor is

one of the most powerful CPUs in the world. This motherboard also supports Intel® CPUs in
the new 45nm manufacturing process.

Intel® Q45 Express Chipset

The Intel® Q45 Express Chipset is the latest chipset designed to support Intel® new 45nm
CPU, 16GB of dual-channel DDR2 800/667 architecture, 1333/1066/800 FSB (Front Side
Bus), PCI Express 1.0/2.0 graphics and multi-core CPU.

Intel® vPro™ Technology

The IntelIntel® vPro™ Technology allows IT organizations to remotely manage corporate PCs,
even when they are powered off or with non-functional operating systems. It features the
Intel® Active Management Technology and offers IT organizations a lighter-weight form of

virtualization to audit all Intel® AMT-based platforms in a network environment. PCs with Intel

®

vPro™ Technology allow IT departments to remotely retrieve assets and hardware/software
inventories, contain security threats, resolve system problems, and increase the uptime of
desktops with lower maintenance costs. To enable the Intel® vPro™ Technology, rst enable
the related vPro™ Technology settings.

DDR2 memory supportory support

The motherboard supports DDR2 memory that features data transfer rates of 800/667 MHz to

meet the higher bandwidth requirements of the latest 3D graphics, multimedia, and Internet
applications. The dual-channel DDR2 architecture doubles the bandwidth of your system
memory to boost system performance, eliminating bottlenecks with peak bandwidths of up

to 12.8 GB/s. Furthermore, this motherboard does not restrict the memory size across two
channels. Users may install different memory size DIMMs into the two channels and enjoy
dual-channel and single-channel functions at the same time. This new feature optimizes the
use of available memory size. See page 1-13 for details.

Serial ATA 3.0 Gb/s technology

This motherboard supports the hard drives based on the Serial ATA (SATA) 3Gb/s storage

specication, delivering enhanced scalability and doubling the bus bandwidth for high-speed

data retrieval and saves. Easily backup photos, videos and other entertainment contents to
external devices. See page 1-31 for details.

P5Q-EM DO.indb 2 12/9/08 12:32:58 PM

ASUS P5Q-EM DO 1-3

Trusted Platform Module (TPM)

The Trusted Platform Module (TPM) provides enhanced data performance via high-level
encryption/decryption, and ensures platform integrity. See page 2-29 for details.

Some third-party softwares may be requirred when running some functions of TPM.

IEEE 1394a support

The IEEE 1394a interface provides high speed digital interface for audio/video appliances
such as digital television, digital video camcorders, storage peripherals & other PC portable
devices. See page 1-29 for details.

S/PDIF digital sound ready

The motherboard supports the S/PDIF-out (SONY-PHILIPS Digtal Interface) function through
the S/PDIF interface at mid-board. It allows to transfer digital audio without converting to
analog format and keeps the best signal quality. See pages 1-28 for details.

High Denition Audio

Enjoy high-end sound quality on your PC! The onboard 8-channel High Denition Audio
CODEC enables high-quality 192KHz/24-bit audio output, jack-sensing feature, and multi-

streaming technology that simultaneously sends different audio streams to different
destinations. You can now talk to your partners on the headphone while playing multi-channel
network games See page 1-34 for details.

1.3.2 ASUS Features

ASUS Quiet Thermal Solution

ASUS Quiet Thermal solution makes system more stable and enhances the overclocking
capability.

ASUS Advanced Q-Fan technology

The ASUS Advanced Q-Fan technology is powered by Intel Quiet System Technology;
it makes the change of fan speed more smoothly. It is better in fan use, and efciently

reduce the noise caused by fans’s abruptly speeding up. Moreover, Advanced Q-Fan
has a better control over a constant temperature system environment.

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1-4 Chapter 1: Product introduction

ASUS EZ DIY

ASUS EZ DIY feature collection provides you easy ways to install computer components,
update the BIOS or back up your favorite settings.

ASUS Q-Connector

ASUS Q-Connector allows you to easily connect or disconnect the chassis front panel
cables to the motherboard. This unique module eliminates the trouble of connecting the
system panel cables one at a time and avoiding wrong cable connections. See page 1-36
for details.

ASUS CrashFree BIOS 3

The ASUS CrashFree BIOS 3 allows users to restore corrupted BIOS data from a USB

ash disk containing the BIOS le. See page 2-5 for details.

ASUS EZ Flash 2

EZ Flash 2 is a user-friendly BIOS update utility. Simply press the predened hotkey to

launch the utility and update the BIOS without entering the OS. Update your BIOS easily

without preparing a bootable diskette or using an OS-based ash utility. See page 2-22

and 2-36 for details.

1.3.3 ASUS Special Features

ASUS MyLogo2™

This feature allows you to convert your favorite photo into a 256-color boot logo for a more
colorful and vivid image on your screen. See page 2-39 for details.

AI Gear 2

AI Gear 2 allows users to choose from proles to adjust CPU frequency and vCore voltage to
minimize system noise and power consumption. For example, users can change the mode

in real time in the operating system to max power saving mode and save CPU power when
using word processing applicaions.

ASUS Crystal Sound

This feature can enhance speech-centric applications like Skype, online game, video
conference and recording.

Noise Filter

This feature detects repetitive and stationary noises (non-voice signals) like computer
fans, air conditioners, and other background noises then eliminates it in the incoming
audio stream while recording.

P5Q-EM DO.indb 4 12/9/08 12:33:09 PM

ASUS P5Q-EM DO 1-5

1.4 Before you proceed

Take note of the following precautions before you install motherboard components or change
any motherboard settings.

• Unplug the power cord from the wall socket before touching any
component.

• Use a grounded wrist strap or touch a safely grounded object or
a metal object, such as the power supply case, before handling
components to avoid damaging them due to static electricity.

• Hold components by the edges to avoid touching the ICs on them.

• Whenever you uninstall any component, place it on a grounded
antistatic pad or in the bag that came with the component.

• Before you install or remove any component, ensure that the ATX power
supply is switched off or the power cord is detached from the power
supply. Failure to do so may cause severe damage to the motherboard,
peripherals, and/or components.

Onboard LED

The motherboard comes with a standby power LED that lights up to indicate that the
system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should
shut down the system and unplug the power cable before removing or plugging in any
motherboard component. The illustration below shows the location of the onboard LED.

SB_PWR

ON

Standby Power Powered Off

OFF

P5Q-EM DO

P5Q-EM DO Onboard LED

P5Q-EM DO.indb 5 12/9/08 12:33:11 PM

1-6 Chapter 1: Product introduction

P5Q-EM DO

1.5 Motherboard overview

Before you install the motherboard, study the conguration of your chassis to ensure that the
motherboard ts into it.

Make sure to unplug the power cord before installing or removing the motherboard. Failure
to do so can cause you physical injury and damage motherboard components.

Do not overtighten the screws! Doing so can damage the motherboard.

1.5.1 Placement direction

When installing the motherboard, make sure that you place it into the chassis in the correct
orientation. The edge with external ports goes to the rear part of the chassis as indicated in
the image below.

1.5.2 Screw holes

Place eight (8) screws into the holes indicated by circles to secure the motherboard to the
chassis.

Place this side towards
the rear of the chassis

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ASUS P5Q-EM DO 1-7

1.5.3 Motherboard layout

P5Q-EM DO

PCIEX16

PCIEX1_1

PCIEX1_2

PCI2

PRI_IDE

USBPW9-12

USBPW1-4

CHA_FAN1

USBPW5-8

FLOPPY

USB1112 USB910 USB56 USB78

IE1394_2

PANEL

SPDIF_OUT

AAFP

CD

ATX12V

EATXPWR

CPU_FAN

COM1

PWR_FAN

Intel

®

Q45

ICS
9LPRS
918JKLF

Super

I/O

AUDIO

ALC
1200

Single

Lan

KBMS

SB_PWR

CLRTC

CHASSIS

24.4cm(9.6in)

24.4cm(9.6in)

LGA775

Intel

®

ICH10DO

DDR2 DIMM_A1 (64bit, 240-pin module)

DDR2 DIMM_A2 (64bit, 240-pin module)

DDR2 DIMM_B1 (64bit, 240-pin module)

DDR2 DIMM_B2 (64bit, 240-pin module)

SPDIF_O2

SERVICE_MODE

DVI_VGA

LAN1_USB12

F_USB34

SATA1SATA2
SATA3SATA4
SATA5SATA6

8Mb

BIOS

8Mb

BIOS

Lithium Cell

CMOS Power

Refer to section

1.10 Connectors

for more information about rear panel connectors and

internal connectors.

P5Q-EM DO.indb 7 12/9/08 12:33:16 PM

1-8 Chapter 1: Product introduction

1.6 Central Processing Unit (CPU)

The motherboard comes with a surface mount LGA775 socket designed for the
Intel® Core™2 Extreme / Core™2 Quad / Core™2 Duo / Pentium® dual-core / Celeron® dual­core / Celeron® processors.

•

Upon purchase of the motherboard, make sure that the PnP cap is on
the socket and the socket contacts are not bent. Contact your retailer
immediately if the PnP cap is missing, or if you see any damage to the PnP
cap/socket contacts/motherboard components. ASUS will shoulder the cost
of repair only if the damage is shipment/transit-related.

•

Keep the cap after installing the motherboard. ASUS will process Return

Merchandise Authorization (RMA) requests only if the motherboard comes

with the cap on the LGA775 socket.

• The product warranty does not cover damage to the socket contacts
resulting from incorrect CPU installation/removal, or misplacement/loss/
incorrect removal of the PnP cap.

•

Make sure the AC power is off before you install the CPU.

• If installing a dual-core CPU, connect the chassis fan cable to the
CHA_FAN1 connector to ensure system stability.

1.6.1 Installing the CPU

To install a CPU:

1. Locate the CPU socket on the motherboard.

Before installing the CPU, make sure that the cam box is facing towards you and the load
lever is on your left.

P5Q-EM DO

P5Q-EM DO CPU socket 775

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ASUS P5Q-EM DO 1-9

To prevent damage to the socket
pins, do not remove the PnP cap
unless you are installing a CPU.

2. Press the load lever with your thumb
(A), then move it to the left (B) until it is
released from the retention tab.

4. Lift the load plate with your thumb and

forenger to a 100º angle (4A), then push

the PnP cap from the load plate window
to remove (4B).

3. Lift the load lever in the direction of the

arrow to a 135º angle.

5. Position the CPU over the socket,
ensuring that the gold triangle is on the

bottom-left corner of the socket then t

the socket alignment key into the CPU
notch.

The CPU ts in only one correct

orientation. DO NOT force the CPU
into the socket to prevent bending
the connectors on the socket and
damaging the CPU!

A

B

Load lever

Retention tab

Load plate

PnP cap

4A

4B

3

Gold
triangle
mark

Alignment key

CPU notch

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1-10 Chapter 1: Product introduction

6. Apply several drops of Thermal
Interface Material to the exposed area
of the CPU that the heatsink will be in
contact with, ensuring that it is spread
in an even thin layer.

DO NOT eat the Thermal Interface Material. If it gets into your eyes or touches your skin,
ensure that you wash it off immediately, and seek professional medical help.

Some heatsinks come with
pre-applied thermal paste. If so, skip
this step.

To prevent contaminating the paste, DO NOT spread the paste with your nger directly.

7. Close the load plate (A), then push
the load lever (B) until it snaps into the
retention tab.

The motherboard supports Intel® LGA775 processors with the Intel® Enhanced Memory
64 Technology (EM64T), Enhanced Intel SpeedStep® Technology (EIST), and Hyper­Threading Technology.

A

B

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ASUS P5Q-EM DO 1-11

1.6.2 Installing the CPU heatsink and fan

The Intel® LGA775 processor requires a specially designed heatsink and fan assembly to
ensure optimum thermal condition and performance.

•

When you buy a boxed Intel® processor, the package includes the CPU fan
and heatsink assembly. If you buy a CPU separately, make sure that you
use only Intel®-certied multi-directional heatsink and fan.

•

Your Intel® LGA775 heatsink and fan assembly comes in a push-pin design
and requires no tool to install.

•

If you purchased a separate CPU heatsink and fan assembly, make sure
that you have properly applied Thermal Interface Material to the CPU
heatsink or CPU before you install the heatsink and fan assembly.

Make sure that you have installed the motherboard to the chassis before you install the
CPU fan and heatsink assembly.

The type of CPU heatsink and fan assembly may differ, but the installation steps and
fucntions should remain the same. The illustration above is for reference only.

To install the CPU heatsink and fan:

1. Place the heatsink on top of the installed
CPU, making sure that the four fasteners
match the holes on the motherboard.

2. Push down two fasteners at a time in a
diagonal sequence to secure the heatsink
and fan assembly in place.

A

A

B

B

1

1

A

B

B

A

P5Q-EM DO.indb 11 12/9/08 12:33:29 PM

1-12 Chapter 1: Product introduction

3. Connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN.

Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if
you fail to plug this connector.

CPU_FAN

CPU FAN PWM

CPU FAN IN

CPU FAN PWR

GND

P5Q-EM DO

P5Q-EM DO CPU fan connector

1.6.3 Uninstalling the CPU heatsink and fan

To uninstall the CPU heatsink and fan

1. Disconnect the CPU fan cable from the connector on the motherboard.

2. Rotate each fastener counterclockwise.

3. Pull up two fasteners at a time in a
diagonal sequence to disengage the
heatsink and fan assembly from the
motherboard.

A

A

B

B

A

A

B

B

4. Carefully remove the heatsink and fan assembly from the motherboard.

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ASUS P5Q-EM DO 1-13

1.7 System memory

1.7.1 Overview

The motherboard comes with four Double Data Rate 2 (DDR2) Dual Inline Memory Modules
(DIMM) sockets.

A DDR2 module has the same physical dimensions as a DDR DIMM but has a 240-pin
footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched differently to
prevent installation on a DDR DIMM socket.

The gure illustrates the location of the DDR2 DIMM sockets:

R

P5E-VM DO

P5E-VM DO

240-pin DDR2 DIMM Sockets

Install at least a memory module in DIMM_A1 or DIMM_A2 slot to support the Intel

®

ME and

Intel® Quiet System Technology and for optimum performance.

Channel Sockets

Channel A DIMM_A1 and DIMM_A2
Channel B DIMM_B1 and DIMM_B2

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1-14 Chapter 1: Product introduction

1.7.2 Memory congurations

You may install 512 MB, 1 GB, 2GB, and 4 GB unbuffered non-ECC DDR2 DIMMs into the
DIMM sockets.

Memory reserved by Intel® ME

Memory slots Total memory occupied by Intel® ME

DIMM A1 DIMM A2 DIMM B1 DIMM B2 1GB / slot 2GB / slot

Installed 16MB 16MB

Installed 16MB 16MB

Installed 0MB 0MB

Installed 0MB 0MB
Installed Installed 16MB 64MB
Installed Installed 32MB 64MB
Installed Installed 32MB 64MB

Installed Installed 32MB 64MB

Installed Installed 0MB 0MB

Installed Installed 32MB 64MB
Installed Installed Installed 32MB 64MB
Installed Installed Installed 32MB 64MB

Installed Installed Installed 32MB 64MB
Installed Installed Installed 32MB 64MB
Installed Installed Installed Installed 64MB 64MB

• You may install varying memory sizes in Channel A and Channel B. The system maps
the total size of the lower-sized channel for the dual-channel conguration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.

• Always install DIMMs with the same CAS latency. For optimum compatibility, it is
recommended that you obtain memory modules from the same vendor.

• Due to the memory address limitation on 32-bit Windows OS, when you install 4GB or
more memory on the motherboard, the actual usable memory for the OS can be about
3GB or less. For effective use of memory, we recommend that you install a 64-bit
Windows OS when having 4GB or more memory installed on the motherboard..

• This motherboard does not support memory modules made up of 256 megabit (Mb)
chips or less.

• This motherboard supports Intel® ME technology. Your system may detects less

memory size than that you installed when Intel® ME function is enabled. Refer to the

following table for details.

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ASUS P5Q-EM DO 1-15

Notes on memory limitations

• Due to chipset limitation, this motherboard can only support up to
16 GB on the operating systems listed below. You may install a maximum
of 4 GB DIMMs on each slot.

• The memory operation frequency depends on its Serial Presence Detect
(SPD). By default, some memory modules for overclocking may run at
lower frequency than the vendor-marked value. If you want to manually
adjust the memory frequency, refer to section 2.4 AI Tweaker menu.

• To stabilize the memory modules, use an efcient memory cooling system

that can support the work load and overclocking conditions.

• The total memory may has 16MB reduction under Single Channel mode,
and 64MB reduction under Dual Channel mode because the address space
is reserved for the Intel® vPro™ Technology and the Intel® Quiet System
Technology.

64-bit

Windows XP Professional x64 Edition

Windows Vista Professional x64 Edition

P5Q-EM DO.indb 15 12/9/08 12:33:43 PM

1-16 Chapter 1: Product introduction

P5Q-EM DO Motherboard Qualied Vendors Lists (QVL)

DDR2-800MHz capability

Vendor Part No. Size SS/DS Chip No. CL

Chip
Brand

DIMM

Support

A* B* C*

A-DATA M2OAD6H3J4171Q1E52 2048MB DS AD20908A8A-25EG N/A A-DATA • • •

Apacer 78.01GA0.9K5 1024MB SS AM4B5808CQJS8E N/A APACER • • •

Apacer 78.91G9I.9K5 512MB SS AM4B5708JQJS8E N/A APACER • • •

Apacer 78.A1GA0.9K4 2048MB DS AM4B5808CQJS8E 5 APACER • • •

CORSAIR “Box P/N:TWIN2X4096-6400C5

(CM2X2048-6400C5)”

4096MB(Kit of 2) DS Heat-Sink Package N/A N/A • • •

CORSAIR “BoxP/N:TWIN2X4096-6400C4DHX

(CM2X2048-6400C4DHX)”

4096MB(Kit of 2) DS Heat-Sink Package 4-4-4-12 N/A • •

CORSAIR “BoxP/N:TWIN2X4096-

6400C5DHX(CM2X2048-6400C5DHX)”

4096MB(Kit of 2) DS

Heat-Sink Package

N/A N/A

•

•

CORSAIR CM2X1024-6400C4 1024MB DS Heat-Sink Package 4 N/A • • •

Crucial BL12864AA804.16FD3 1024MB DS Heat-Sink Package 4 N/A •

Crucial

BL12864AA804.16FD 1024MB

DS

Heat-Sink Package 4

N/A •

•

•

Crucial BL12864AL804.16FD3 1024MB DS Heat-Sink Package 4 N/A • • •

ELPIDA EBE10EE8ABFA-8E-E 1024MB SS E1108AB-8E-E(ECC) 5 ELPIDA •

G.SKILL F2-6400CL5D-1GBNQ 1024MB(Kit of 2) SS Heat-Sink Package 5-5-5-15 N/A • •

G.SKILL F2-6400CL4D-2GBHK 1024MB DS Heat-Sink Package N/A N/A • •

G.SKILL F2-6400CL4D-2GBPK 1024MB DS Heat-Sink Package N/A N/A • •

G.SKILL F2-6400CL4D-4GBPK 4096MB(Kit of 2) DS Heat-Sink Package 4 N/A • • •

G.SKILL F2-6400CL5D-2GBNQ 1024MB DS Heat-Sink Package N/A N/A •

G.SKILL F2-6400CL5D-4GBPQ 4096MB(Kit of 2) DS Heat-Sink Package 5 N/A • • •

G.SKILL F2-6400CL6D-8GBNQ 8192MB(Kit of 2) DS Heat-Sink Package 6-6-6-18 N/A • • •

G.SKILL F2-6400PHU2-2GBNR 1024MB DS Heat-Sink Package N/A N/A • • •

GEIL GB22GB6400C4DC 2048MB(Kit of 2) DS GL2L64M088BA30EB N/A N/A • •

GEIL GB22GB6400C5DC 2048MB(Kit of 2) DS GL2L64M088BA30EB 5-5-5-15 GEIL • • •

GEIL GB24GB6400C4DC 4096MB(Kit of 2) DS GL2L128M88BA25AB 4-4-4-12 GEIL • • •

GEIL GB24GB6400C4QC 4096MB(Kit of 4) DS GL2L64M088BA30EB N/A N/A • •

GEIL GB24GB6400C5DC 4096MB(Kit of 2) DS GL2L128M88BA25AB 5-5-5-15 GEIL • • •

GEIL GB24GB6400C5QC 4096MB(Kit of 2) DS GL2L64M088BA30EB N/A N/A • • •

GEIL GB28GB6400C4QC 8192MB(Kit of 4) DS GL2L128M88BA25AB N/A N/A • • •

GEIL GB28GB6400C5QC 8192MB(Kit of 4) DS GL2L128M88BA25AB N/A N/A • • •

GEIL GE22GB800C4DC 2048MB(Kit of 2) DS Heat-Sink Package 4-4-4-12 N/A • • •

GEIL GE22GB800C5DC 2048MB(Kit of 2) DS Heat-Sink Package 5-5-5-15 N/A • • •

GEIL GE24GB800C4DC 2048MB DS Heat-Sink Package 4-4-4-12 N/A • •

GEIL GE24GB800C4QC 4096MB(Kit of 4) DS Heat-Sink Package N/A N/A • • •

GEIL GE24GB800C5DC 2048MB DS Heat-Sink Package 5-5-5-15 N/A •

GEIL GE24GB800C5QC 4096MB(Kit of 4) DS Heat-Sink Package 5-5-5-15 N/A • • •

GEIL GE28GB800C4QC 2048MB DS Heat-Sink Package 4-4-4-12 N/A • • •

GEIL GE28GB800C5QC 2048MB DS Heat-Sink Package 5-5-5-15 N/A •

GEIL GX22GB6400C4USC 2048MB DS Heat-Sink Package 4-4-4-12 N/A • • •

GEIL GX22GB6400DC 2048MB(Kit of 2) DS Heat-Sink Package 5-5-5-15 N/A • • •

GEIL GX22GB6400LX 2048MB DS Heat-Sink Package 5-5-5-15 N/A • •

GEIL GX22GB6400UDC 2048MB(Kit of 2) DS Heat-Sink Package 4-4-4-12 N/A • • •

GEIL GX24GB6400DC 4096MB(Kit of 2) DS Heat-Sink Package 5-5-5-15 N/A • •

Hynix HYMP564U64CP8-S5 512MB SS HY5PS12821CFP-S5 5-5-5 Hynix • •

Hynix HYMP 512U64CP8-S5 1024MB DS HY5PS12821CFP-S5 5-5-5 Hynix • • •

continued on the next page

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ASUS P5Q-EM DO 1-17

DDR2-667MHz capability

Vendor Part No. Size SS/DS Chip No. CL

Chip
Brand

DIMM

Support

A* B* C*

KINGMAX KLDC28F-A8KI5 512MB SS KKA8FEIBF-HJK-25A N/A KINGMAX • •

KINGMAX KLDD48F-ABKI5 1024MB DS KKA8FEIBF-HJK-25A N/A KINGMAX • • •

KINGMAX KLDE88F-B8KB5 2048MB DS KKB8FFBXF-CFA-25A N/A KINGMAX • •

KINGSTON KHX6400D2/ 512 512MB SS Heat-Sink Package N/A N/A • •

KINGSTON KVR800D2N5/ 512 512MB SS E5108AJBG-8E-E N/A ELPIDA •

KINGSTON KVR800D2N5/1G

1024MB

SS HY5PS1GB31CFP-S5

N/A

Hynix •

• •

KINGSTON KVR800D2N6/ 512 512MB SS E5108AJBG-8E-E 1.8 ELPIDA •

KINGSTON KHX6400D2/2G 2048MB DS Heat-Sink Package N/A N/A • • •

KINGSTON KHX6400D2LL/1G 1024MB DS Heat-Sink Package 4-4-4-12 N/A •

KINGSTON KVR800D2N5/1G 1024MB DS E5108AJBG-8E-E N/A ELPIDA •

KINGSTON KVR800D2N5/1G 1024MB DS V59C1 512804QBF25 N/A N/A • •

KINGSTON

KVR800D2N5/2G 2048MB

DS

E1108ACBG-8E-E N/A

ELPIDA •

•

•

KINGSTON KVR800D2N6/1G 1024MB DS E5108AJBG-8E-E 1.8 ELPIDA • • •

NANYA NT 512T64U880BY-25C 512MB SS NT5TU64M8BE-25C 5 NANYA •

NANYA NT1GT64U8HCOBY-25D 1024MB DS NT5TU64M8CE-25D N/A NANYA •

NANYA NT2GT64U8HC0BY-AC 2048MB DS NT5TU128M8CE-AC 5 NANYA •

OCZ OCZ2FX800C32GK 1024MB DS Heat-Sink Package N/A N/A • •

OCZ OCZ2G8001G 1024MB DS Heat-Sink Package 5 N/A •

OCZ OCZ2T8002GK 1024MB DS Heat-Sink Package N/A N/A •

DDR2-800MHz capability

Vendor Part No. Size

SS/
DS

Chip No. CL Chip Brand

DIMM Support

A* B* C*

Apacer 78.01G9O.9K5 1024MB SS AM4B5808CQJS7E N/A APACER • • •

Apacer 78.91G92.9K5 512MB SS AM4B5708JQJS7E N/A APACER • •

Apacer 78.A1G9O.9K4 2048MB DS AM4B5808CQJS7E N/A APACER • •

CORSAIR VS 512MB667D2 512MB SS 64M8CFEG N/A N/A •

CORSAIR VS1GB667D2 1024MB DS 64M8CFEG N/A N/A • •

crucial BL6464AA663.8FD 512MB SS Heat-Sink Package 3 N/A •

crucial BL12864AA663.16FD2 1024MB DS Heat-Sink Package 3 N/A • •

crucial BL12864AA663.16FD 1024MB DS Heat-Sink Package 3 N/A •

crucial BL12864AL664.16FD 1024MB DS Heat-Sink Package 3 N/A •

ELPIDA EBE51UD8AEFA-6E-E 512MB SS E5108AE-6E-E 5 ELPIDA • •

G.SKILL F2-5300CL5D-4GBMQ 4096MB(Kit of 2) DS Heat-Sink Package 5-5-5-15 N/A • • •

G.SKILL F2-5400PHU2-2GBNT 2048MB(Kit of 2) DS D264M8GCF 5-5-5-15 G.SKILL • • •

GEIL GX21GB5300SX 1024MB DS Heat-Sink Package 3-4-4-8 N/A • •

GEIL GX22GB5300LX 2048MB DS Heat-Sink Package 5-5-5-15 N/A • • •

GEIL GX24GB5300LDC 4096MB(Kit of 2) DS Heat-Sink Package 5-5-5-15 N/A • • •

Hynix HYMP112U64CP8-Y5 1024MB SS HY5PS1G831CFP-Y5 5 Hynix • • •

Hynix HYMP 512U64CP8-Y5 1024MB DS HY5PS12821CFP-Y5 5 Hynix • • •

KINGSTON KVR667D2N5/ 512 512MB SS D6408TEBGGL3U 5 KINGSTON •

KINGSTON KVR667D2E5/1G 1024MB DS E5108AGBG-6E-E(ECC) N/A ELPIDA • • •

KINGSTON KVR667D2E5/2G 2048MB DS D9HNL(ECC) N/A MICRON • • •

KINGSTON KVR667D2N5/1G 1024MB DS E5108AGBG-6E-E N/A KINGSTON • • •

KINGSTON KVR667D2N5/1G 1024MB DS E5108AJBG-8E-E N/A ELPIDA • • •

KINGSTON KVR667D2N5/1G 1024MB DS HY5PS12821CFP-Y5 N/A Hynix • • •

KINGSTON KVR667D2N5/2G 2048MB DS E1108AB-6E-E N/A ELPIDA • • •

continued on the next page

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1-18 Chapter 1: Product introduction

SS - Single-sided / DS - Double - sided
DIMM support:

• A*: Supports one module inserted in any slot as Single-channel memory

conguration.

• B*: Supports one pair of modules inserted into either the yellow slots or the

black slots as one pair of Dual-channel memory conguration.

• C*: Supports four modules inserted into both the yellow and black slots as

two pairs of Dual-channel memory conguration.

Visit the ASUS website for the latest DDR2-800/667 MHz QVL.800/667 MHz QVL. MHz QVL.

Vendor Part No. Size

SS/

DS

Chip No. CL Chip Brand

DIMM Support

A* B* C*

KINGSTON KVR667D2N5/2G 2048MB DS HY5PS1G831CFP-Y5 N/A Hynix • • •

NANYA NT 512T64U88B0BY-3C 512MB SS NT5TU64M8BE-3C 5 NANYA • •

NANYA NT2GT64U8HB0JY-3C 2048MB DS NT5TU128M8BJ-3C 5 NANYA • • •

PSC AL7E8E63J-6E1 1024MB DS A3R12E3JFF719A9T02 5 PSC • •

Qimonda HYS64T256020EU-3S-C2 2048MB DS HYB18T1GB00C2F-3S 555-12 Qimonda •

SAMSUNG M378T6553EZS-CE6 512MB SS K4T51083QE 5 SAMSUNG • •

SAMSUNG M378T2953EZ3-CE6 1024MB DS K4T51083QE 5 SAMSUNG • • •

SAMSUNG

M378T5263AZ3-CE6

4096MB DS

K4T2G084QA-HCE6

5 SAMSUNG

• •

•

Super Talent T6UA 512C5 512MB SS Heat-Sink Package 5 N/A • •

Super Talent T6UB1GC5 1024MB DS Heat-Sink Package 5 N/A • • •

Transcend JM667QLU-1G 1024MB SS TQ243ECF8 5 Transcend • • •

Transcend JM667QLU-2G 2048MB DS TQ243ECF8 5 Transcend • • •

TwinMOS 8D-23JK5M2ETP 512MB SS TMM6208G8M30C 5 TwinMOS •

Aeneon AET660UD00-30DB97X

512MB

SS AET93R300B

5 AENEON

• •

Aeneon

AET860UD00-30DB08X 2048MB DS AET03F30DB 5 AENEON • • •

Asint SLX264M8-J6E 512MB SS DDRII6408-6E N/A Asint • •

Asint SLY2128M8-J6E 1024MB SS DDRII1208-6E N/A Asint • • •

CENTURY 26V2H8 512MB SS HY5PS12821CFP-Y5 5 Hynix • •

CENTURY 26VOH8 1024MB DS HY5PS12821CFP-Y5 5 Hynix • • •

Kingbox N/A 1024MB SS EPD2128082200E-4 N/A N/A • • •

Kingbox N/A 1024MB DS EPD264082200E-4 N/A N/A • • •

MDT M 512-667-8 512MB SS 18D 51280D-30648 4 MDT • •

Patriot PSD2 51266781 512MB SS PM64M8D2BU-3KC N/A N/A • •

Patriot PSD21G6672 1024MB DS PM64M8D2BU-3PAC 5 Patriot • • •

UMAX U2S12D30TP-6E 1024MB DS D46701GP3-63BJU N/A UMAX • • •

UMAX U2S24D30TP-6E 2048MB DS D46702GP0-73BCU N/A UMAX • • •

DDR2-667MHz capability

P5Q-EM DO.indb 18 12/9/08 12:33:55 PM

ASUS P5Q-EM DO 1-19

1.7.3 Installing a DIMM

Unplug the power supply before adding or removing DIMMs or other system components.
Failure to do so can cause severe damage to both the motherboard and the components.

1.7.4 Removing a DIMM

To remove a DIMM:

1. Simultaneously press the retaining
clips outward to unlock the DIMM.

2. Remove the DIMM from the socket.

Support the DIMM lightly with

your ngers when pressing the

retaining clips. The DIMM might

get damaged when it ips out with

extra force.

3. Firmly insert the DIMM into the socket
until the retaining clips snap back in place
and the DIMM is properly seated.

A DDR2 DIMM is keyed with a notch so that it ts in only one direction. DO NOT force a

DIMM into a socket to avoid damaging the DIMM.

1. Press the retaining clips outward to
unlock a DDR2 DIMM socket.

2. Align a DIMM on the socket such that
the notch on the DIMM matches the
break on the socket.

Unlocked retaining clip

1

DDR2 DIMM notch

2

1

Locked retaining clip

3

DDR2 DIMM notch

1

1

2

P5Q-EM DO.indb 19 12/9/08 12:34:00 PM

1-20 Chapter 1: Product introduction

1.8 Expansion slots

In the future, you may need to install expansion cards. The following sub-sections describe
the slots and the expansion cards that they support.

1.8.1 Installing an expansion card

To install an expansion card:

1. Before installing the expansion card, read the documentation that came with it and
make the necessary hardware settings for the card.

2. Remove the system unit cover (if your motherboard is already installed in a chassis).

3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later
use.

4. Align the card connector with the slot and press rmly until the card is completely

seated on the slot.

5. Secure the card to the chassis with the screw you removed earlier.

6. Replace the system cover.

1.8.2 Conguring an expansion card

After installing the expansion card, congure it by adjusting the software settings.

1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for
information on BIOS setup.

2. Assign an IRQ to the card. Refer to the tables on the next page.

3. Install the software drivers for the expansion card.

Make sure to unplug the power cord before adding or removing expansion cards. Failure to
do so may cause you physical injury and damage motherboard components.

When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that

the cards do not need IRQ assignments. Otherwise, conicts will arise between the two PCI

groups, making the system unstable and the card inoperable. Refer to the table on the next
page for details.

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ASUS P5Q-EM DO 1-21

1.8.3 Interrupt assignments

Standard interrupt assignments

* These IRQs are usually available for ISA or PCI devices.

IRQ Priority Standard function

0 1 System timer
1 2 Keyboard controller
2

– Re-direct to IRQ#9
3 11 IRQ holder for PCI steering*
4 12 Communications port (COM1)*
5 13 IRQ holder for PCI steering*
6 14 Floppy disk controller
7 15 IRQ holder for PCI steering*

8 3 System CMOS/Real Time Clock

9 4 IRQ holder for PCI steering*

10 5 IRQ holder for PCI steering*
11 6 IRQ holder for PCI steering*
12 7 PS/2 compatible mouse port*
13 8 Numeric data processor
14 9 IRQ holder for PCI steering*
15 10 IRQ holder for PCI steering*

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1-22 Chapter 1: Product introduction

IRQ assignments for this motherboard

A B C D E F G H

HECI Host#1 shared – – – – – – –
IDE-R Controller – – shared – – – – –
KT Controller – shared – – – – –
Thermal Controller – – shared – – – – –
VE AHCI Controller – – shared – – – – –
GbEthernet Controller – – – – shared – – –
1394 (FW3227) – – – shared – – – –
LAN (8111C) – shared – – – – – –
Marvell 6102 shared – – – – – – –
PCIEX16_1 shared – – – – – – –
PCIEX1_1 shared – – – – – – –
PCIEX1_2 – shared – – – – – –
PCI1 shared – – – – – – –
USB controller 1 – – – – – – – used
USB controller 2 – – – shared – – – –
USB controller 3 – – shared – – – – –
USB controller 4 shared – – – – – – –
USB controller 5 shared – – – – – –
USB controller 6 – – – – – used – –
USB 2.0 controller 1 – – – – – – – shared
USB 2.0 controller 2 – – shared – – – – –
SATA controller 1 – – shared – – – – –
SATA controller 2 – – – shared – – – –

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ASUS P5Q-EM DO 1-23

1.8.4 PCI slots

The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that

comply with PCI specications. The gure shows a LAN card installed on a PCI slot.

1.8.5 PCI Express x1 slot

This motherboard supports PCI Express x1 network cards, SCSI cards and other cards

that comply with the PCI Express specications. The following gure shows a network card

installed on the PCI Express x1 slot.

1.8.6 PCI Express x16 slot

This motherboard supports PCI Express x16 graphic cards that comply with the PCI Express

specications. The gure shows a graphics card installed on the PCI Express x16 slot.

PCI slot

PCIe x1 slot

PCIe x1 slot

PCIe 2.0 x16 slot

P5Q-EM DO.indb 23 12/9/08 12:34:08 PM

1-24 Chapter 1: Product introduction

1.9 Jumper

1. Clear RTC RAM (3-pin CLRTC)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in
CMOS, which include system setup information such as system passwords.

P5Q-EM DO

P5Q-EM DO Clear RTC RAM

1 2 2 3

Normal

(Default)

Clear RTC

CLRTC

Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!

To erase the RTC RAM

1. Turn OFF the computer and unplug the power cord.

2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3
for about 5–10 seconds, then move the cap back to pins 1-2.

3. Plug the power cord and turn ON the computer.

4. Hold down the <Del> key during the boot process and enter BIOS setup to re­enter data.

• If the steps above do not help, remove the onboard battery and move the jumper again
to clear the CMOS RTC RAM data. After the CMOS clearance, reinstall the battery.

• You do not need to clear the RTC when the system hangs due to overclocking. For
system failure due to overclocking, use the C.P.R. (CPU Parameter Recall) feature.
Shut down and reboot the system so the BIOS can automatically reset parameter
settings to default values.

• Due to the chipset behavior, AC power off is required to enable C.P.R. function. You
must turn off and on the power supply or unplug and plug the power cord before
rebooting the system.

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ASUS P5Q-EM DO 1-25

P5Q-EM DO

P5Q-EM DO USB Device Wake Up

21

2 3

+5V

+5VSB

(Default)

USBPW1-4

21

2 3

+5V

(Default)

+5VSB

21

2 3

+5V

(Default)

+5VSB

USBPW9-12 USBPW5-8

2. USB device wake-up (3-pin USBPW1-4, USBPW5-8, USBPW9-12)

Set these jumpers to +5V to wake up the computer from S1 sleep mode (CPU stopped,
DRAM refreshed, system running in low power mode) using the connected USB
devices. Set to +5VSB to wake up from S3 and S4 sleep modes (no power to CPU,
DRAM in slow refresh, power supply in reduced power mode).

• The USB device wake-up feature requires a power supply that can
provide 500mA on the +5VSB lead for each USB port; otherwise,
the system would not power up.

• The total current consumed must NOT exceed the power supply
capability (+5VSB) whether under normal condition or in sleep mode.

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1-26 Chapter 1: Product introduction

1.10 Connectors

1.10.1 Rear panel connectors

1. PS/2 mouse port (green). This port is for a PS/2 mouse.

2. Optical S/PDIF Out port. This port connects an external audio output device via an

optical S/PDIF cable.

3. ME Switch. Allows you to enable or disable the Intel® ME function. Push the switch to

ON/OFF labelled on the I/O Shield to enable/disable this function.

Disable the Intel® ME function before updating BIOS.

4. IEEE 1394a port. This 6-pin IEEE 1394a port provides high-speed connectivity for

audio/video devices, storage peripherals, PCs, or portable devices.

5. VGA port. This port is for a VGA monitor or other VGA-compatible devices.

6. LAN (RJ-45) port. Supported by Intel® 882567 LM Gigabit LAN controller, this port

allows Gigabit connection to a Local Area Network (LAN) through a network hub. Refer
to the table below for the LAN port LED indications.

Activity/Link LED Speed LED

Status Description Status Description

OFF No link OFF 10 Mbps connection

ORANGE Linked ORANGE 100 Mbps connection

BLINKING Data activity GREEN 1 Gbps connection

LAN port LED indications

SPEED

LED

ACT/LINK

LED

LAN port

7. Center/Subwoofer port (orange). This port connects the center/subwoofer speakers.

8. Rear Speaker Out port (black). This port connects the rear speakers in a 4-channel,

6-channel, or 8-channel audio conguration.

9. Line In port (light blue).

This port connects the tape, CD, DVD player, or other audio

sources.

7 8 9 1065

11121314

1

16

2

4

15

3

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ASUS P5Q-EM DO 1-27

Refer to the audio conguration table below for the function of the audio ports in 2, 4, 6, or
8-channel conguration.

Audio 2, 4, 6, or 8-channel conguration

Port

Headset

2-channel

4-channel 6-channel 8-channel

Light Blue Line In Line In Line In Line In

Lime Line Out Front Speaker Out Front Speaker Out Front Speaker Out

Pink Mic In Mic In Mic In Mic In

Orange – – Center/Subwoofer Center/Subwoofer

Black – Rear Speaker Out Rear Speaker Out Rear Speaker Out

Gray – – – Side Speaker Out

10. Line Out port (lime). This port connects a headphone or a speaker. In 4-channel, 6-

channel, and 8-channel conguration, the function of this port becomes Front Speaker

Out.

11. Microphone port (pink). This port connects a microphone.

12. Side Speaker Out port (gray). This port connects the side speakers in an 8-channel

audio conguration.

13. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are

available for connecting USB 2.0 devices.

14. DVI port. This port is for any DVI-D compatible device. DVI-D can’t be converted to

output RGB Signal to CRT and isn’t compatible with DVI-I.

15. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are

available for connecting USB 2.0 devices.

16. PS/2 keyboard port (purple). This port is for a PS/2 keyboard.

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1-28 Chapter 1: Product introduction

2. Digital Audio connector (4-1 pin SPDIF_OUT)

This connector is for the S/PDIF audio module to allow digital sound output. Connect
one end of the S/PDIF audio cable to this connector and the other end to the S/PDIF
module.

The S/PDIF out module is purchased separately.

SPDIF_OUT

+5V

SPDIFOUT

GND

P5Q-EM DO

P5Q-EM DO Digital audio connector

1.10.2 Internal connectors

1. Floppy disk drive connector (34-1 pin FLOPPY)

This connector is for the oppy disk drive (FDD) signal cable. Insert one end of the

cable to this connector, then connect the other end to the signal connector at the back

of the oppy disk drive.

• Pin 5 on the connector is removed to prevent incorrect cable connection when using a
FDD cable with a covered Pin 5.

• The oppy disk drive singal cable is purchased separately.

P5Q-EM DO

P5Q-EM DO Floppy disk drive connector

FLOPPY

NOTE:Orient the red markings
on the floppy ribbon cable to PIN 1.

PIN1

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ASUS P5Q-EM DO 1-29

3. IEEE 1394a port connector (10-1 pin IE1394_2)

This connector is for a IEEE 1394a port. Connect the IEEE 1394a module cable to this
connector, then install the module to a slot opening at the back of the system chassis.

P5Q-EM DO IEEE 1394 connector

P5Q-EM DO

PIN 1

TPA2-

GND

TPB2-

+12V

GND

TPA2+

GND

TPB2+

+12V

IE1394_2

The IEEE 1394a module is purchased separately.

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1-30 Chapter 1: Product introduction

4. IDE connector (40-1 pin PRI_EIDE)

The onboard IDE connector is for the Ultra DMA 133/100/66 signal cable. There are
three connectors on each Ultra DMA 133/100/66 signal cable: blue, black, and gray.
Connect the blue connector to the motherboard’s IDE connector, then select one of the

following modes to congure your device.

• Pin 20 on the IDE connector is removed to match the covered hole on the
Ultra DMA cable connector. This prevents incorrect insertion when you
connect the IDE cable.

• Use the 80-conductor IDE cable for Ultra DMA 133/100/66 IDE devices.

If any device jumper is set as “Cable-Select,” make sure all other device jumpers have the
same setting.

Drive jumper setting Mode of

device(s)

Cable connector

Single device Cable-Select or Master - Black

Two devices

Cable-Select

Master

Black

Slave Gray

Master Master

Black or gray

Slave Slave

P5Q-EM DO

PRI_EIDE

NOTE:Orient the red markings
on the IDE ribbon cable to PIN 1.

PIN1

P5Q-EM DO IDE connector

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ASUS P5Q-EM DO 1-31

5. ICH10DO Serial ATA connectors (7-pin SATA1[red], SATA2 [red], SATA3 [red],
SATA4 [red], SATA5 [red], SATA6 [red])

These connectors are for the Serial ATA signal cables for Serial ATA hard disk drives.

Connect the right-angle side of SATA
signal cable to SATA device. Or you
may connect the right-angle side of
SATA cable to the onboard SATA port

to avoid mechanical conict with huge

graphics cards.

right angle side

SATA5

GND

RSATA_RXN5

RSATA_RXP5

GND

RSATA_TXN5

RSATA_TXP5

GND

SATA6

GND

RSATA_RXN6

RSATA_RXP6

GND

RSATA_TXN6

RSATA_TXP6

GND

SATA3

GND

RSATA_RXN3

RSATA_RXP3

GND

RSATA_TXN3

RSATA_TXP3

GND

SATA4

GND

RSATA_RXN4

RSATA_RXP4

GND

RSATA_TXN4

RSATA_TXP4

GND

SATA1

GND

RSATA_RXN1

RSATA_RXP1

GND

RSATA_TXN1

RSATA_TXP1

GND

SATA2

GND

RSATA_RXN2

RSATA_RXP2

GND

RSATA_TXN2

RSATA_TXP2

GND

P5Q-EM DO

P5Q-EM DO SATA connectors(ICH10DO®)

6. Optical drive audio connector (4-pin CD)

These connectors allow you to receive stereo audio input from sound sources such as a
CD-ROM, TV tuner, or MPEG card.

CD

Left Audio Channel

GND

GND

Right Audio Channel

P5Q-EM DO

P5Q-EM DO Internal audio connector

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1-32 Chapter 1: Product introduction

7. USB connectors (10-1 pin USB56, USB78, USB910, USB1112)

These connectors are for USB 2.0 ports. Connect the USB module cable to any of these
connectors, then install the module to a slot opening at the back of the system chassis.

These USB connectors comply with USB 2.0 specication that supports up to 480 Mbps

connection speed.

Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!

You can connect the USB cable to ASUS Q-Connector (USB, blue) rst, and then install the

Q-Connector (USB) to the USB connector onboard.

P5Q-EM DO

P5Q-EM DO USB2.0 connectors

PIN 1

USB+5V

USB_P8-

USB_P8+

GND

NC

USB+5V

USB_P7-

USB_P7+

GND

USB78

PIN 1

USB+5V

USB_P6-

USB_P6+

GND

NC

USB+5V

USB_P5-

USB_P5+

GND

USB56

PIN 1

USB+5V

USB_P10-

USB_P10+

GND

NC

USB+5V

USB_P9-

USB_P9+

GND

USB910

PIN 1

USB+5V

USB_P12-

USB_P12+

GND

NC

USB+5V

USB_P11-

USB_P11+

GND

USB1112

The USB module is purchased separately.

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ASUS P5Q-EM DO 1-33

8. CPU, chassis, and power fan connectors
(4-pin CPU_FAN, 3-pin CHA_FAN1, 3-pin PWR_FAN)

The fan connectors support cooling fans of 350 mA ~ 2000 mA (24 W max.) or a total
of 1 A ~ 7 A (84 W max.) at +12V. Connect the fan cables to the fan connectors on the
motherboard, making sure that the black wire of each cable matches the ground pin of
the connector.

Do not forget to connect the fan cables to the fan connectors. Insufcient air ow inside the

system may damage the motherboard components. These are not jumpers! Do not place
jumper caps on the fan connectors!

P5Q-EM DO

P5Q-EM DO fan connectors

PWR_FAN

Rotation

+12V

GND

Rotation

+12V

GND

CHA_FAN1

CPU_FAN

CPU FAN PWM

CPU FAN IN

CPU FAN PWR

GND

9. Chassis intrusion connector (4-1 pin CHASSIS)

This connector is for a chassis-mounted intrusion detection sensor or switch. The
chassis intrusion sensor or switch sends a high-level signal to this connector when a
chassis component is removed or replaced. The signal is then generated as a chassis
intrusion event.

By default , the pin labeled “Chassis Signal” and “ Ground” are shorted with a jumper cap.
Remove the jumper caps only when you intend to use the chassis intrusion detection
feature.

P5Q-EM DO

+5VSB_MB

Chassis Signal

GND

CHASSIS

P5Q-EM DO Chassis intrusion connector

Only the 4-pin CPU_FAN connectors support the ASUS Advanced Q-Fan feature. This
motherboard does not support 3-pin CPU fan.

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1-34 Chapter 1: Product introduction

10. Front panel audio connector (10-1 pin AAFP)

This connector is for a chassis-mounted front panel audio I/O module that supports either
HD Audio or legacy AC`97 audio standard. Connect one end of the front panel audio I/O
module cable to this connector.

•

We recommend that you connect a high-denition front panel audio module

to this connector to avail of the motherboard’s high-denition audio capability.

• By default, this connector is set to

[HD Audio]

. If you want to connect a

AC’ 97 front panel audio module to this connector, set the

Front Panel

Type

item in the BIOS setup to

[AC97]

. See section

2.5.3 Onboard Device

Conguration

for details.

P5Q-EM DO

P5Q-EM DO Analog front panel connector

AAFP

PIN 1

GND

PRESENCE#

SENSE1_RETUR

SENSE2_RETUR

PORT1 L

PORT1 R

PORT2 R

SENSE_SEND

PORT1 L

HD-audio-compliant

pin definition

PIN 1

AGNDNCNC

NC

MIC2

MICPWR

Line out_R

NC

Line out_L

Legacy AC’97

compliant definition

•

For a fully congured system, we recommend that you use a power supply

unit (PSU) that complies with ATX 12 V Specication 2.0 (or later version)

and provides a minimum power of 400 W.

• Do not forget to connect the 4-pin ATX12V power plug; otherwise, the

system will not boot.

• Use of a PSU with a higher power output is recommended when

conguring a system with more power-consuming devices. The system

may become unstable or may not boot up if the power is inadequate.

11. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)

These connectors are for ATX power supply plugs. The power supply plugs are designed

to t these connectors in only one orientation. Find the proper orientation and push down
rmly until the connectors completely t.

P5Q-EM DO

P5Q-EM DO ATX power connectors

EATXPWR

PIN 1

GND
+5 Volts
+5 Volts
+5 Volts

-5 Volts
GND
GND
GND
PSON#
GND

-12 Volts
+3 Volts

+3 Volts
+12 Volts
+12 Volts

+5V Standby

Power OK

GND

+5 Volts

GND

+5 Volts

GND
+3 Volts
+3 Volts

ATX12V

PIN 1

+12V DC

+12V DC

GND

GND

P5Q-EM DO.indb 34 12/9/08 12:34:51 PM

ASUS P5Q-EM DO 1-35

•

System power LED (2-pin PLED)

This 2-pin connector is for the system power LED. Connect the chassis power LED cable
to this connector. The system power LED lights up when you turn on the system power,
and blinks when the system is in sleep mode.

•

Hard disk drive activity LED (2-pin +IDE_LED)

This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable

to this connector. The IDE LED lights up or ashes when data is read from or written to

the HDD.

•

System warning speaker (4-pin SPEAKER)

This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.

•

ATX power button/soft-off button (2-pin PWRSW)

This connector is for the system power button. Pressing the power button turns the
system on or puts the system in sleep or soft-off mode depending on the BIOS settings.
Pressing the power switch for more than four seconds while the system is ON turns the
system OFF.

•

Reset button (2-pin RESET)

This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.

12. System panel connector (20-8 pin PANEL)

This connector supports several chassis-mounted functions.

P5Q-EM DO

P5Q-EM DO System panel connector

PIN 1

* Requires an ATX power supply

PLED SPEAKER

PLED+

PLED-

+5V

Ground

Ground

Speaker

IDE_LED+

IDE_LED-

PWR

Ground

Reset

Ground

PANEL

IDE_LED PWRSW RESET

P5Q-EM DO.indb 35 12/9/08 12:34:52 PM

1-36 Chapter 1: Product introduction

ASUS Q-Connector (system panel)

You can use the ASUS Q-Connector to connect/disconnect chassis front panel cables in a
few steps. Refer to the following instructions to install the ASUS
Q-Connector.

1. Connect the front panel cables to the ASUS
Q-Connector.

Refer to the labels on the Q-Connector to

know the detailed pin denitions, and then

match them to the respective front panel
cable labels.

The labels on the front panel cables
may vary depending on chassis model.

2. Install the ASUS Q-Connector to the system
panel connector, making sure the orientation
matches the labels on the motherboard.

3. The front panel functions are now enabled.
The gure shows the
Q-Connector properly installed on the
motherboard.

P5Q-EM DO.indb 36 12/9/08 12:34:57 PM

2

Chapter 2: BIOS setup

This chapter tells how to change
the system settings through the BIOS Setup
menus. Detailed descriptions
of the BIOS parameters are also provided.

P5Q-EM DO.indb 1 12/9/08 12:35:00 PM

ASUS P5Q-EM DO

Chapter summary

2

2.1 Managing and updating your BIOS ..........................................................2-1

2.2 BIOS setup program ................................................................................2-10

2.3 Main menu ................................................................................................2-13

2.4 Ai Tweaker menu ......................................................................................2-17

2.5 Advanced menu .......................................................................................2-21

2.6 Power menu .............................................................................................. 2-31

2.7 Boot menu ................................................................................................2-35

2.8 Tools menu ............................................................................................... 2-39

2.9 Exit menu .................................................................................................. 2-40

2.10 Intel® ME conguration ............................................................................ 2-41

P5Q-EM DO.indb 2 12/9/08 12:35:01 PM

ASUS P5Q-EM DO 2-1

2.1 Managing and updating your BIOS

The following utilities allow you to manage and update the motherboard Basic Input/Output
System (BIOS) setup.

1. ASUS EZ Flash 2 (Updates the BIOS using a oppy disk or USB ash disk.)

2. ASUS AFUDOS (Updates the BIOS in DOS mode using a bootable oppy disk.)

3. ASUS CrashFree BIOS 3 (Updates the BIOS using a oppy disk, USB ash disk, or

the motherboard support DVD when the BIOS le fails or gets corrupted.)

4. ASUS Update (Updates the BIOS in Windows® environment.)

Refer to the corresponding sections for details on these utilities.

2.1.1 Creating a bootable oppy disk

1. Do either one of the following to create a bootable oppy disk.

DOS environment

a. Insert a 1.44MB oppy disk into the drive.

b. At the DOS prompt, type format A:/S then press <Enter>.

Windows® XP environment

a. Insert a 1.44 MB oppy disk to the oppy disk drive.

b. Click Start from the Windows® desktop, then select My Computer.

c. Select the 3 1/2 Floppy Drive icon.

d. Click File from the menu, then select Format. A Format 3 1/2 Floppy Disk

window appears.

e. Select Create an MS-DOS startup disk from the format options eld, then click

Start.

2. Copy the original or the latest motherboard BIOS le to the bootable oppy disk.

Windows® Vista environment

a. Insert a formatted, high density 1.44 MB oppy disk to the oppy disk drive.

b. Click from the Windows® desktop, then select Computer.

c. Right-click Floppy Disk Drive then click Format to display the Format 3 1/2

Floppy dialog box.

d. Select the Create an MS-DOS startup disk check box.

e. Click Start.

Save a copy of the original motherboard BIOS le to a bootable oppy disk or a USB ash

disk in case you need to restore the BIOS in the future. Copy the original motherboard
BIOS using the ASUS Update or AFUDOS utilities.

Disable the ME function before updating the BIOS. Refer to page 1-26 for details on how to
enable/disable the ME function.

P5Q-EM DO.indb 1 12/9/08 12:35:04 PM

2-2 Chapter 2: BIOS setup

To update the BIOS using EZ Flash 2:

1. Visit the ASUS website (www.asus.com) to download the latest BIOS le for the

motherboard.

2. Save the BIOS le to a oppy disk or a USB ash disk, then restart the system.

3. You can launch the EZ Flash 2 by two methods.

2.1.2 ASUS EZ Flash 2 utility

The ASUS EZ Flash 2 feature allows you to update the BIOS without having to go through

the long process of booting from a oppy disk and using a DOS-based utility. The EZ Flash 2

utility is built-in the BIOS chip so it is accessible by pressing <Alt> + <F2> during the Power­On Self-Test (POST).

(2) Enter BIOS setup program. Go to the Tools menu to select EZ Flash2 and press

<Enter> to enable it.

(1) Insert the oppy disk / USB ash disk that contains the BIOS le to the oppy disk

drive or the USB port.

Press <Alt> + <F2> during POST to display the following.

You can switch between drives by pressing <Tab> before the correct le is found.

Then press <Enter>.

• This function can support devices such as USB ash disk, or oppy disk

with

FAT 32/16

format only.

• Do not shut down or reset the system while updating the BIOS to prevent
system boot failure!

4. When the correct BIOS le is found, EZ Flash 2 performs the BIOS update process and

automatically reboots the system when done.

ASUSTek EZ Flash 2 BIOS ROM Utility V3.25

Current ROM

Update ROM

A:

Note

[Enter] Select or Load [Tab] Switch [ V ] D r i v e I n f o
[Up/Down/Home/End] Move [B] Backup [ESC] Exit

FLASH TYPE: MXIC 25L1605A

PATH: A:\

BOARD: P5Q-EM-DO
VER: 0211(H:00 B:00)

DATE: 08/26/08

BOARD: Unknown
VER: Unknown

DATE: Unknown

P5Q-EM DO.indb 2 12/9/08 12:35:06 PM

ASUS P5Q-EM DO 2-3

2.1.3 AFUDOS utility

The AFUDOS utility allows you to update the BIOS le in DOS environment using a bootable
oppy disk with the updated BIOS le. This utility also allows you to copy the current BIOS
le that you can use as backup when the BIOS fails or gets corrupted during the updating

process.

Copying the current BIOS

To copy the current BIOS le using the AFUDOS utility:

Main lename Extension name

1. Copy the AFUDOS utility (afudos.exe) from the motherboard support DVD to the

bootable oppy disk you created earlier.

2. Boot the system in DOS mode, then at the prompt type:

afudos /o[lename]

where the [lename] is any user-assigned lename not more than eight alphanumeric
characters for the main lename and three alphanumeric characters for the extension

name.

A:\>afudos /oOLDBIOS1.rom

• Make sure that the oppy disk is not write-protected and has at least
1024KB free space to save the le.

• The succeeding BIOS screens are for reference only. The actual BIOS
screen displays may not be same as shown.

The utility returns to the DOS prompt after copying the current BIOS le.

3. Press <Enter>. The utility copies the current BIOS le to the oppy disk.

A:\>afudos /oOLDBIOS1.rom

AMI Firmware Update Utility - Version 1.19(ASUS V2.26(06.08.28BB))

Copyright (C) 2003 American Megatrends, Inc. All rights reserved.

Reading ash ..... done

Write to le...... ok

A:\>

P5Q-EM DO.indb 3 12/9/08 12:35:08 PM

2-4 Chapter 2: BIOS setup

Updating the BIOS le

To update the BIOS le using the AFUDOS utility:

1. Visit the ASUS website (www.asus.com) and download the latest BIOS le for the
motherboard. Save the BIOS le to a bootable oppy disk.

2. Copy the AFUDOS utility (afudos.exe) from the motherboard support DVD to the

bootable oppy disk you created earlier.

3. Boot the system in DOS mode, then at the prompt type:

afudos /i[lename]

where [lename] is the latest or the original BIOS le on the bootable oppy disk.

A:\>afudos /iP5QEMDO.ROM

Write the BIOS lename on a piece of paper. You need to type the exact BIOS lename at

the DOS prompt.

A:\>afudos /iP5QEMDO.ROM

AMI Firmware Update Utility - Version 1.19(ASUS V2.26(06.08.28BB))

Copyright (C) 2003 American Megatrends, Inc. All rights reserved.

WARNING!! Do not turn off power during ash BIOS

Reading le ....... done

Reading ash ...... done

Advance Check ......

Erasing ash ...... done

Writing ash ...... 0x0008CC00 (9%)

4. The utility veries the le and starts updating the BIOS.

Do not shut down or reset the system while updating the BIOS to prevent system boot
failure!

5. The utility returns to the DOS prompt after the BIOS update process is completed.
Reboot the system from the hard disk drive.

A:\>afudos /iP5QEMDO.ROM

AMI Firmware Update Utility - Version 1.19(ASUS V2.26(06.08.28BB))

Copyright (C) 2003 American Megatrends, Inc. All rights reserved.

WARNING!! Do not turn off power during ash BIOS

Reading le ....... done

Reading ash ...... done

Advance Check ......

Erasing ash ...... done

Writing ash ...... done

Verifying ash .... done

Please restart your computer

A:\>

P5Q-EM DO.indb 4 12/9/08 12:35:09 PM

ASUS P5Q-EM DO 2-5

2.1.4 ASUS CrashFree BIOS 3 utility

The ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS le

when it fails or gets corrupted during the updating process. You can update a corrupted BIOS

le using the motherboard support DVD, the USB ash disk, or the oppy disk that contains
the updated BIOS le.

Recovering the BIOS from a oppy disk

To recover the BIOS from a oppy disk:

1. Turn on the system.

2. Insert the oppy disk with the original or updated BIOS le to the oppy disk drive.

3. The utility displays the following message and automatically checks the oppy disk for
the original or updated BIOS le.

Bad BIOS checksum. Starting BIOS recovery...

Checking for oppy...

4. Restart the system after the utility completes the updating process.

Bad BIOS checksum. Starting BIOS recovery...
Checking for oppy...
Floppy found!
Reading le “P5QEMDO.ROM”. Completed.
Start ashing...

When found, the utility reads the BIOS le and starts ashing the corrupted BIOS le.

• Prepare the motherboard support DVD, the USB ash disk, or the oppy

disk containing the updated motherboard BIOS before using this utility.

• Make sure that you rename the original or updated BIOS le in the oppy

disk or the USB ash disk to P5QEMDO.ROM.

If your display monitor is connected to the onboard VGA connector,
the display monitor will turn-off and the system will beep once while
CrashFree BIOS 3 starts updating your system. The system will

beep once again while the process is nished, and the display will

return after the system restarts.

P5Q-EM DO.indb 5 12/9/08 12:35:09 PM

2-6 Chapter 2: BIOS setup

Recovering the BIOS from the support DVD

To recover the BIOS from the support DVD:

1. Remove any oppy disk from the oppy disk drive, then turn on the system.

2. Insert the support DVD to the optical drive.

3. The utility displays the following message and automatically checks the oppy disk for
the original or updated BIOS le.

Bad BIOS checksum. Starting BIOS recovery...
Checking for oppy...
Floppy not found!
Checking for CD-ROM...
CD-ROM found!
Reading le “P5QEMDO.ROM”. Completed.
Start ashing...

When no oppy disk is found, the utility automatically checks the optical drive for the

original or updated BIOS le. The utility then updates the corrupted BIOS le.

Bad BIOS checksum. Starting BIOS recovery...
Checking for oppy...

4. Restart the system after the utility completes the updating process.

• Only the USB ash disk with FAT 32/16 format and single partition can
support ASUS CrashFree BIOS 3. The device size should be smaller than

8GB.

• DO NOT shut down or reset the system while updating the BIOS! Doing so
can cause system boot failure!

Recovering the BIOS from the USB ash disk

To recover the BIOS from the USB ash disk:

1. Insert the USB ash disk that contains BIOS le to the USB port.

2. Turn on the system.

3. The utility will automatically checks the devices for the BIOS le when found, the utility
reads the BIOS le and starts ashing the corrupted BIOS le.

4. Restart the system after the utility completes the updating process.

The recovered BIOS may not be the latest BIOS version for this motherboard. Visit the

ASUS website (www.asus.com) to download the latest BIOS le.

P5Q-EM DO.indb 6 12/9/08 12:35:10 PM

ASUS P5Q-EM DO 2-7

2.1.5 ASUS Update utility

The ASUS Update is a utility that allows you to manage, save, and update the motherboard
BIOS in Windows® environment. The ASUS Update utility allows you to:

• Save the current BIOS le

• Download the latest BIOS le from the Internet

• Update the BIOS from an updated BIOS le

• Update the BIOS directly from the Internet, and

• View the BIOS version information.

This utility is available in the support DVD that comes with the motherboard package.

ASUS Update requires an Internet connection either through a network or an Internet
Service Provider (ISP).

Installing ASUS Update

To install ASUS Update:

1. Place the support DVD in the optical drive. The Drivers menu appears.

2. Click the Utilities tab, then click Install ASUS Update. See page 3-3 for the Utilities

screen menu.

The ASUS Update utility is copied to your system.

Quit all Windows® applications before you update the BIOS using this utility.

Updating the BIOS through the Internet

To update the BIOS through the Internet:

1. Launch the ASUS Update utility from the Windows® desktop by clicking Start >

Programs > ASUS > ASUSUpdate > ASUSUpdate. The ASUS Update main window
appears.

P5Q-EM DO.indb 7 12/9/08 12:35:13 PM

2-8 Chapter 2: BIOS setup

3. Select the ASUS FTP site nearest you

to avoid network trafc, or click Auto
Select. Click Next.

2. Select Update BIOS from the
Internet option from the drop-down

menu, then click Next.

4. From the FTP site, select the BIOS
version that you wish to download. Click
Next.

5. Follow the screen instructions to
complete the update process.

The ASUS Update utility is capable
of updating itself through the Internet.
Always update the utility to avail all
its features.

P5Q-EM DO.indb 8 12/9/08 12:35:17 PM

ASUS P5Q-EM DO 2-9

Updating the BIOS through a BIOS le

To update the BIOS through a BIOS le:

1. Launch the ASUS Update utility from the Windows® desktop by clicking Start >

Programs > ASUS > ASUSUpdate > ASUSUpdate. The ASUS Update main window

appears.

2. Select Update BIOS from a le option

from the drop-down menu, then click
Next.

3. Locate the BIOS le from the Open
window, then click Open.

4. Follow the screen instructions to
complete the update process.

P5QEMDO

P5QEMDO.rom

P5Q-EM DO.indb 9 12/9/08 12:35:20 PM

2-10 Chapter 2: BIOS setup

• The default BIOS settings for this motherboard apply for most conditions
to ensure optimum performance. If the system becomes unstable after
changing any BIOS settings, load the default settings to ensure system
compatibility and stability. Select the Load Setup Defaults item under the
Exit Menu. See section “2.9 Exit Menu.”

• The BIOS setup screens shown in this section are for reference purposes only,
and may not exactly match what you see on your screen.

• Visit the ASUS website (www.asus.com) to download the latest BIOS le

for this motherboard.

2.2 BIOS setup program

This motherboard supports a programmable Serial Peripheral Interface (SPI) chip that you
can update using the provided utility described in section “2.1 Managing and updating your
BIOS.”

Use the BIOS Setup program when you are installing a motherboard, reconguring your
system, or prompted to “Run Setup.” This section explains how to congure your system

using this utility.

Even if you are not prompted to use the Setup program, you can change the conguration of

your computer in the future. For example, you can enable the security password feature or

change the power management settings. This requires you to recongure your system using
the BIOS Setup program so that the computer can recognize these changes and record them

in the CMOS RAM of the SPI chip.

The SPI chip on the motherboard stores the Setup utility. When you start up the computer,
the system provides you with the opportunity to run this program. Press <Del> during the

Power-On Self-Test (POST) to enter the Setup utility; otherwise, POST continues with its test

routines.

If you wish to enter Setup after POST, reboot the system by doing any of the following
procedures:

• Restart using the OS standard shut-down procedure.

• Press <Ctrl>+<Alt>+<Del> simultaneously.

• Press the reset button on the system chassis.

• Press the power button to turn the system off then back on.

Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force
reset from a running operating system can cause damage to your data or system. We
recommend to always shut-down the system properly from the operating system.

The Setup program is designed to make it as easy to use as possible. Being a menu-driven
program, it lets you scroll through the various sub-menus and make your selections from the
available options using the navigation keys.

P5Q-EM DO.indb 10 12/9/08 12:35:22 PM

ASUS P5Q-EM DO 2-11

2.2.2 Menu bar

The menu bar on top of the screen has the following main items:

Main For changing the basic system conguration

Ai Tweaker For changing system performance settings

Advanced For changing the advanced system settings

Power For changing the advanced power management (APM)

conguration

Boot For changing the system boot conguration

Tools For conguring options for special functions

Exit For selecting the exit options and loading default

settings

2.2.1 BIOS menu screen

To select an item on the menu bar, press the right or left arrow key on the keyboard until the
desired item is highlighted.

Some of the navigation keys differ from one screen to another.

2.2.3 Navigation keys

At the bottom right corner of a menu screen are the navigation keys for that particular menu.
Use the navigation keys to select items in the menu and change the settings.

Select Screen

Select Item
+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

BIOS SETUP UTILITY

Main Ai Tweaker Advanced Power Boot Tools Exit

System Time [00:36:36]
System Date [Fri 08/15/2008]
Legacy Diskette A [1.44M, 3.5 in]

SATA 1 [WDC WD800JD-00LSA0]
SATA 2 [Not Detected]
SATA 3 [Not Detected]
SATA 4 [Not Detected]
SATA 5 [Not Detected]
SATA 6 [Not Detected]

Storage Coniguration

System Information

Use [ENTER], [TAB] or
[SHIFT-TAB] to select
a eld.

Use [+] or [-] to
congure system Time.

Navigation keys

General help

Menu bar

Sub-menu items

Conguration eldsMenu items

P5Q-EM DO.indb 11 12/9/08 12:35:25 PM

2-12 Chapter 2: BIOS setup

2.2.4 Menu items

The highlighted item on the menu

bar displays the specic items for that

menu. For example, selecting Main
shows the Main menu items.

The other items (Advanced, Power,
Boot, Tool, and Exit) on the menu bar
have their respective menu items.

2.2.5 Sub-menu items

A solid triangle before each item on any menu screen means that the iteam has a sub-menu.
To display the sub-menu, select the item and press <Enter>.

2.2.6 Conguration elds

These elds show the values for the menu items. If an item is user- congurable, you can
change the value of the eld opposite the item. You cannot select an item that is not user­congurable.

A congurable eld is enclosed in brackets, and is highlighted when selected. To change the
value of a eld, select it then press <Enter> to display a list of options. Refer to “2.2.7 Pop-up

window.”

2.2.7 Pop-up window

Select a menu item then press <Enter> to display a pop-up window with the conguration

options for that item.

2.2.8 Scroll bar

A scroll bar appears on the right side of a menu screen when there are items that do not t on

the screen. Press the
Up/Down arrow keys or <Page Up> / <Page Down> keys to display the other items on the
screen.

2.2.9 General help

At the top right corner of the menu screen is a
brief description of the selected item.

Main menu items

Scroll bar

Pop-up window

Select Screen

Select Item
+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

BIOS SETUP UTILITY

Main Ai Tweaker Advanced Power Boot Tools Exit

System Time [00:36:36]
System Date [Fri 08/15/2008]
Legacy Diskette A [1.44M, 3.5 in]

SATA 1 [WDC WD800JD-00LSA0]
SATA 2 [Not Detected]
SATA 3 [Not Detected]
SATA 4 [Not Detected]
SATA 5 [Not Detected]
SATA 6 [Not Detected]

Storage Coniguration

System Information

Use [ENTER], [TAB] or
[SHIFT-TAB] to select
a eld.

Use [+] or [-] to
congure system Time.

P5Q-EM DO.indb 12 12/9/08 12:35:28 PM

ASUS P5Q-EM DO 2-13

2.3 Main menu

When you enter the BIOS Setup program, the Main menu screen appears, giving you an
overview of the basic system information.

2.3.1 System Time [xx:xx:xx]

Allows you to set the system time.

2.3.2 System Date [Day xx/xx/xxxx]

Allows you to set the system date.

2.3.3 Legacy Diskette A [1.44M, 3.5 in.]

Sets the type of oppy drive installed.
Conguration options: [Disabled] [720K, 3.5 in.] [1.44M, 3.5 in.]

Refer to section “2.2.1 BIOS menu screen” for information on the menu screen items and
how to navigate through them.

Select Screen

Select Item
+- Change Field
Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

BIOS SETUP UTILITY

Main Ai Tweaker Advanced Power Boot Tools Exit

System Time [00:36:36]
System Date [Fri 08/15/2008]
Legacy Diskette A [1.44M, 3.5 in]

SATA 1 [WDC WD800JD-00LSA0]
SATA 2 [Not Detected]
SATA 3 [Not Detected]
SATA 4 [Not Detected]
SATA 5 [Not Detected]
SATA 6 [Not Detected]

Storage Coniguration

System Information

Use [ENTER], [TAB] or
[SHIFT-TAB] to select
a eld.

Use [+] or [-] to
congure system Time.

P5Q-EM DO.indb 13 12/9/08 12:35:30 PM

2-14 Chapter 2: BIOS setup

2.3.4 SATA1-6

While entering Setup, the BIOS automatically detects the presence of SATA devices. There is
a separate sub-menu for each IDE device. Select a device item then press <Enter> to display
the SATA device information.

The BIOS automatically detects the values opposite the dimmed items (Device, Vendor, Size,

LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART monitoring). These

values are not user-congurable. These items show N/A if no IDE device is installed in the

system.

Type [Auto]

Selects the type of IDE drive. Setting to [Auto] allows automatic selection of the appropriate
IDE device type. Select [CDROM] if you are specically conguring a CD-ROM drive. Select
[ARMD] (ATAPI Removable Media Device) if your device is either a ZIP, LS-120, or MO drive.
Conguration options: [Not Installed] [Auto] [CDROM] [ARMD]

LBA/Large Mode [Auto]

Enables or disables the LBA mode. Setting to [Auto] enables the LBA mode if the device

supports this mode, and if the device was not previously formatted with LBA mode disabled.

Conguration options: [Disabled] [Auto]

Block (Multi-Sector Transfer) M [Auto]

Enables or disables data multi-sectors transfers. When set to [Auto], the data transfer from

and to the device occurs multiple sectors at a time if the device supports multi-sector transfer

feature. When set to [Disabled], the data transfer from and to the device occurs one sector at

a time.

Conguration options: [Disabled] [Auto]

PIO Mode [Auto]

Selects the PIO mode. Conguration options: [Auto] [0] [1] [2] [3] [4]

Select Screen

Select Item
+- Change Option
F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

BIOS SETUP UTILITY

Main

SATA 1

Device : Hard Disk
Vendor : WDC WD800JD-00LSA0
Size : 80.0GB
LBA Mode : Supported
Block Mode : 16 Sectors
PIO Mode : 4
Async DMA : MultiWord DMA-2
Ultra DMA : Ultra DMA-5
SMART Monitoring: Supported

Type [Auto]

LBA/Large Mode [Auto]
Block(Multi-Sector Transfer)M [Auto]
PIO Mode [Auto]
DMA Mode [Auto]
SMART Monitoring [Auto]
32Bit Data Transfer [Enabled]

Select the type of
device connected to
the system.

P5Q-EM DO.indb 14 12/9/08 12:35:32 PM

ASUS P5Q-EM DO 2-15

DMA Mode [Auto]

Selects the DMA mode. Conguration options: [Auto]

SMART Monitoring [Auto]

Sets the Smart Monitoring, Analysis, and Reporting Technology.

Conguration options: [Auto] [Disabled] [Enabled]

32Bit Data Transfer [Enabled]

Enables or disables 32-bit data transfer. Conguration options: [Disabled] [Enabled]

SATA#1 Conguration [Compatible]

Allows you to enable or disable SATA conguration.
Conguration options: [Disabled] [Compatible] [Enhanced]

Configure SATA#1 as [IDE]

Sets the conguration for the Serial ATA connectors supported by the Southbridge chip.
Conguration options: [IDE] [RAID] [AHCI]

The AHCI allows the onboard storage driver to enable advanced Serial ATA features
that increases storage performance on random workloads by allowing the drive to

internally optimize the order of commands.

If you want to create a RAID 0, RAID 1, RAID 5, RAID 10, or the Intel

®

Matrix Storage

Technology conguration from the Serial ATA hard disk drives, set this item to [RAID].

Hard Disk Write Protect [Disabled]

Disables or enables device write protection. This will be effective only if device is accessed

throuh BIOS. Conuration option: [Disabled] [Enabled]

IDE Detect Time Out (Sec) [35]

Selects the time out value for detecting ATA/ATAPI devices.

Conguration options: [0] [5] [10] [15] [20] [25] [30] [35]

2.3.5 Storage Conguration

The items in this menu allow you to set or change the congurations for the storage devices
installed in the system. Select an item then press <Enter> if you want to congure the item.

Storage Conguration

SATA#1 Conguration [Compatible]

Congure SATA#1 as [IDE]

Hard Disk Write Protect [Disabled]
IDE Detect Time Out (Sec) [35]

Options

Disabled
Compatiable
Enhanced

P5Q-EM DO.indb 15 12/9/08 12:35:33 PM

2-16 Chapter 2: BIOS setup

2.3.6 System Information

This menu gives you an overview of the general system specications. The BIOS

automatically detects the items in this menu.

AMI BIOS

Displays the auto-detected BIOS information

Processor

Displays the auto-detected CPU specication

System Memory

Displays the auto-detected system memory

AMIBIOS

Version : 0211
Build Date : 08/24/08

Processor

Type :

Intel(R) Core(TM)2 CPU 6300 @ 1.86GHz
Speed : 1866 MHz

Count : 1

System Memory

Usable Size: 990MB

P5Q-EM DO.indb 16 12/9/08 12:35:34 PM

ASUS P5Q-EM DO 2-17

2.4 Ai Tweaker menu

The Ai Tweaker menu items allow you to change the settings for system performance.

Select Screen

Select Item

+- Change Field

Tab Select Field
F1 General Help
F10 Save and Exit
ESC Exit

BIOS SETUP UTILITY

Main Ai Tweaker Advanced Power Boot Tools Exit

Congure System Performance Settings

Ai Overclock Tuner [Auto]

Ratio CMOS Setting [Auto]
FSB Strap to North Bridge [Auto]
DRAM Frequency [Auto]
Congure DRAM Timing by SPD [Enabled]

CPU Spread Sepctrum [Auto]
PCIE Spread Sprectrum [Auto]
CPU Clock Skew [Auto]
NB Clock Skew [Auto]

CPU Voltage [Auto]
CPU PLL Voltage [Auto]
FSB Termination voltage [Auto]
DRAM Voltage [Auto]
NB Voltage [Auto]
PCIE SATA Voltage [Auto]

*********************************

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

Options

MANUAL
Auto

2.4.1 Ai Overclock Tuner [Auto]

Allows selection of CPU overclocking options to achieve desired CPU internal frequency.

Select either one of the preset overclocking conguration options:

Manual - Allows you to individually set overclocking parameters.

Auto - Loads the optimal settings for the system.

The following two items appear only when you set the Ai Overclock Tuner item to

[Manual].

FSB Frequency [XXX]

Displays the frequency sent by the clock generator to the system bus and PCI bus. The value
of this item is auto-detected by the BIOS. Input the desired CPU frequency using the numeric
keypad. The values range from 200 to 800. Refer to the table below for the correct Front Side
Bus and CPU External Frequency settings.

FSB/CPU External Frequency Synchronization

Front Side Bus CPU External Frequency

FSB 1600 400 MHz

FSB 1333 333 MHz

FSB 1066 266 MHz

FSB 800 200 MHz

P5Q-EM DO.indb 17 12/9/08 12:35:37 PM

2-18 Chapter 2: BIOS setup

PCIE Frequency [Auto]

Allows you to set the PCI Express frequency. Use the <+> and <-> keys to adjust the PCIE
frequency. The values range from 100 to 180.

2.4.2 FSB Strap to North Bridge [Auto]

When set to [Auto], the FSB Strap will be adjusted automatically by FSB Frequency and
DRAM Frequency. Conguration options: [Auto] [200MHz] [266MHz] [333MHz]

2.4.3 DRAM Frequency [Auto]

Allows you to set the DDR2 operating frequency.

Conguration options: [Auto] [DDR2-533 MHz] [DDR2-639 MHz] [DDR2-667 MHz] [DDR2­800 MHz] [DDR2-887 MHz] [DDR2-1064 MHz]

Selecting a very high DRAM frequency may cause the system to become unstable! If this
happens, revert to the default setting.

The DRAM Frequency conguration options vary with the FSB Frequency item settings.

2.4.4 Congure DRAM Timing by SPD [Enabled]

Allows you to set the DRAM timing control. Conguration options: [Enabled] [Disabled]

2.4.5 CPU Spread Spectrum [Auto]

Set to [Disabled] to enhance FSB overclocking ability or [Auto] for EMI control. Conguration
options: [Auto] [Disabled]

2.4.6 PCIE Spread Spectrum [Auto]

Set to [Disabled] to enhance PCIE overclocking ability or [Auto] for EMI control.Conguration
options: [Auto] [Disabled]

2.4.7 CPU Clock Skew [Auto]

Allows you to set the CPU clock skew.

Conguration options: [Auto] [Normal] [Delay 100ps] [Delay 200ps] [Delay 300ps] [Delay
400ps] [Delay 500ps] [Delay 600ps] [Delay 700ps] [Delay 800ps] [Delay 900ps] [Delay
1000ps] [Delay 1100ps] [Delay 1200ps] [Delay 1300ps] [Delay 1400ps] [Delay 1500ps]

P5Q-EM DO.indb 18 12/9/08 12:35:38 PM

ASUS P5Q-EM DO 2-19

2.4.8 NB Clock Skew [Auto]

Allows you to set the Northbridge chipset clock skew.

Conguration options: [Auto] [Normal] [Delay 100ps] [Delay 200ps] [Delay 300ps] [Delay
400ps] [Delay 500ps] [Delay 600ps] [Delay 700ps] [Delay 800ps] [Delay 900ps] [Delay
1000ps] [Delay 1100ps] [Delay 1200ps] [Delay 1300ps] [Delay 1400ps] [Delay 1500ps]

2.4.9 CPU Voltage [Auto]

Allows you to set the CPU VCore voltage. The values range from 0.85000V to 1.60000V*
with a 0.00625V interval. Press +/- to adjust the value.

Refer to the CPU documentation before setting the CPU Vcore voltage. Setting a high
VCore voltage may damage the CPU permanently, and setting a low VCore voltage may
make the system unstable.

2.4.10 CPU PLL Voltage [Auto]

Allows you to set the CPU PLL voltage. The values range from 1.50V to 1.60V with a 0.10V
interval. Press +/- to adjust the value.

2.4.11 FSB Termination Voltage [Auto]

Allows you to set the front side bus termination voltage. The values range from 1.10V* to

1.20V with a 0.10V interval. Press +/- to adjust the value.

2.4.12 DRAM Voltage [Auto]

Allows you to set the DRAM voltage. The values range from 1.80V to 2.15V with a 0.05V
interval. Press +/- to adjust the value.

2.4.13 NB Voltage [Auto]

Allows you to set the North Bridge voltage. The values range from 1.10V to 1.40V with a

0.10V interval. Press +/- to adjust the value.

• Setting the CPU PLL Voltage, FSB Termination Voltage, DRAM Voltage and NB
Voltage items to a high level may damage the chipset, memory module and CPU
permanently. Proceed with caution.

• Some values of the CPU PLL Voltage, FSB Termination Voltage, DRAM Voltage
and NB Voltage items are labeled in different color, indicating the risk levels of high
voltage settings. Refer to the table below for details.

• The system may need better cooling system to work stably under high voltage
settings.

P5Q-EM DO.indb 19 12/9/08 12:35:39 PM

2-20 Chapter 2: BIOS setup

Blue Yellow Purple Red

CPU PLL Voltage 1.5V~1.6V N/A N/A N/A

FSB Termination Voltage 1.2V~1.3V N/A N/A N/A

DRAM Voltage 1.80V~1.95V 2.00V~2.05V 2.10V~2.15V N/A

NB Voltage 1.1V~1.4V N/A N/A N/A

2.4.14 PCIE SATA Voltage [Auto]

Allows you to set the PCI Express SATA voltage. The values range from 1.50V to 1.80V with
a 0.10V interval. Press +/- to adjust the value.

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ASUS P5Q-EM DO 2-21

2.5 Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system
devices.

Take caution when changing the settings of the Advanced menu items. Incorrect eld

values can cause the system to malfunction.

Select Screen

Select Item
Enter Go to Sub Screen
F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

CPU Conguration
Chipset
Onboard Devices Conguration
USB Conguration
PCIPnP
TPM Conguration
Intel VT-d Conguration
Intel TXT(LT) Conguration

BIOS SETUP UTILITY

Main Ai Tweaker Advanced Power Boot Tools Exit

Congure CPU.

Select Screen

Select Item

+- Change Option

F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

BIOS SETUP UTILITY

Advanced

Congure advanced CPU settings

Manufacturer:Intel
Brand String:Intel(R) Core(TM)2 Duo CPU @ 3.00GHz
Frequency :3.01GHz
FSB Speed :1340 MHz
Cache L1 :64 KB
Cache L2 :4096 KB
Ratio Status: Unlocked (Min:06, Max:09)
Ratio Actual Value:9
CPUID :6F9

CPU Ratio Setting [Auto]
C1E Support [Enabled]
Max CPUID Value Limit [Disabled]
Intel(R) Virtualization Tech [Enabled]
CPU TM function [Enabled]
Execute Disable Bit [Enabled]
Intel(R) SpeedStep(TM) Tech [Enabled]
Intel(R) C-STATE Tech [Disabled]

Sets the ratio between
CPU Core Clock and the
FSB Frequency.
NOTE: If an invalid
ratio is set in CMOS
then actual and
setpoint values may
differ.

2.5.1 CPU Conguration

The items in this menu show the CPU-related information that the BIOS automatically
detects.

The items shown in this screen may be different due to the CPU you installed.

P5Q-EM DO.indb 21 12/9/08 12:35:44 PM

2-22 Chapter 2: BIOS setup

C1E Support [Enabled]

Allows you to enable or disable Enhanced Halt State support.

Conguration options: [Disabled] [Enabled]

Max CPUID Value Limit [Disabled]

Setting this item to [Enabled] allows legacy operating systems to boot even without

support for CPUs with extended CPUID functions.

Conguration options: [Disabled] [Enabled]

Intel(R) Virtualization Tech [Enabled]

The Intel® Virtualization Technology allows a hardware platform to run multiple operating
systems separately and simultaneously, enabling one system to virtually function as several
systems.

Conguration options: [Disabled] [Enabled]

CPU TM function [Enabled]

This function enables the overheated CPU to throttle the clock speed to cool down.

Conguration options: [Disabled] [Enabled]

Execute Disable Bit [Enabled]

Allows you to enable or disable the No-Execution Page Protection Technology. Setting this

item to [Disabled] forces the XD feature ag to always return to zero (0).
Conguration options: [Disabled] [Enabled]

The following items appear only when you set the CPU Ratio Control item to [Auto].

Intel(R) SpeedStep (TM) Tech [Enabled]

When set to [Disabled], the CPU runs at its default speed. When set to [Enabled], the CPU

speed is controlled by the operating system.

Conguration options: [Disabled] [Enabled]

Intel(R) C-STATE Tech [Disabled]

Allows you enable or disable the Intel® C-STATE Technology. When enabled, the CPU idle is
set to C2/C3/C4.

Conguration options: [Disabled] [Enabled]

CPU Ratio Setting [Auto]

Allows you to adjust the ratio between CPU Core Clock and FSB Frequency. Use the <+>
and <-> keys to adjust the value.

Conguration options: [Auto] [06.0] [07.0] [08.0] [09.0]

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ASUS P5Q-EM DO 2-23

2.5.2 Chipset

The Chipset menu allows you to change the advanced chipset settings. Select an item then
press <Enter> to display the sub-menu.

Advanced Chipset Settings

WARMING: Setting wrong values in below sections
may cause system to malfunction.

North Bridge Conguration
ME Subsystem Conguration
VE Subsystem Conguration

Congure North Bridge
features.

BIOS SETUP UTILITY

Advanced

North Bridge Chipset Conguration

Memory Remap Feature [Enabled]

Allows you to enable or disable the remapping of the overlapped PCI memory above
the total physical memory. Enable this option only when you install
64-bit operating system.

Conguration options: [Disabled] [Enabled]

Initiate Graphic Adapter [PEG/PCI]

Allows you to decide which graphics controller to use as the primary boot device.

Conguration options: [IGD] [PCI/IGD] [PCI/PEG] [PEG/IGD] [PEG/PCI]

IGD Graphics Mode Select [Enabled, XXMB]

Allows you to select the size of system memory used by the internal graphics device.
Conguration options: [Disabled] [Enabled, 32MB] [Enabled, 48MB] [Enabled, 64MB]
[Enabled, 128MB] [Enabled, 256MB]

GTT Graphics Memory Size [No VT mode, 2MB]

This item is not available.

PAVP Function [Disabled]

Allows you to set the GMCH Protected Audio Video Path (PAVP) BIOS support.

Conguration options: [Disabled] [Lite Mode] [Paranoid]

DVMT Memory [256MB]

Conguration options: [128MB] [256MB] [Maximum DVMT]

North Bridge Chipset Conguration

Memory Remap Feature [Enabled]

Initiate Graphic Adapter [PEG/PCI]
IGD Graphics Mode Select [Enabled, 32GB]

GTT Graphics Memory Size [No VT mode, 2MB]

PAVP Function [Diabled]

DVMT Memory [256MB]

BIOS SETUP UTILITY

Advanced

ENABLE: Allow
remapping of
overlapped PCI memory
above the total
physical memory.

DISABLE: Do not allow
remapping of memory.

P5Q-EM DO.indb 23 12/9/08 12:35:48 PM

2-24 Chapter 2: BIOS setup

ME Subsystem Conguration

ME Subsystem Conguration

ASF Support [Enabled]

ME HECI Conguration

ME-HECI [Enabled]
ME-EDER [Disabled]
ME-KT [Disabled]

Congure Intel AMT Parameters

ME BIOS Extension [Enabled]

BIOS SETUP UTILITY

Advanced

Disabled
Enabled

Options

ASF Support [Disabled]

Allows you to enable or disable the Alert Standard Format (ASF).

Conguration options: [Disabled] [Enabled].

ME HECI Configuration

ME-Device [Enabled]

When set to [Enabled], Host Embedded Communication Interface (HECI) provides an interface
for the exchange of message between the host software and the ME rmware. Conguration
options: [Disabled] [Enabled].

ME-IDER [Disabled]

Allows you to enable or disable the IDE Redirection interface by which the remote management

console is able to direct the client PC to boot. Conguration options: [Disabled] [Enabled].

The [Maximum DVMT] option appears only when you install DIMM modules more than 1

GB.

This motherboard supports Intel® DVMT 5.0 Technology whose maximum graphics memory

size in total varies with the system memory size in total and the operating system. Refer to

the following table for details.

System Memory

Maximum Total Graphics Memory

Windows® XP Windows® Vista™

1GB to < 1.5GB 512MB 552MB

1GB to < 2GB 768MB 808MB
2GB to < 3GB 1024MB 1320MB
3GB to < 4GB — 1832MB

4GB and above — 1849MB

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ASUS P5Q-EM DO 2-25

VE-VECI [Disabled]

Allows you to enable or disable the Virtualization Embedded Controller Interface

(VECI).

Conguration options: [Disabled] [Enabled]

Unhide All Physical HC [Enabled]

Allows you to choose hide or not hide all physical Host Controllers.

Conguration options: [Disabled] [Enabled]

VE Subsystem Conguration

VE Subsystem Conguration

VE-VECI [Disabled]

Unhide All Physical HC [Enabled]

BIOS SETUP UTILITY

Advanced

Enable/Disable VECI
Messaging

ME-KT [Disabled]

When set to [Enabled], the KT function helps redirect keyboard and POST message to the

remote management console and thus facilitates the control of the client machine through the
network.

Conguration options: [Disabled] [Enabled].

Configure Intel AMT Parameters

ME BIOS Extension [Enabled]

Allows you to enable or disable ME BIOS Extension.
Conguration options: [Enabled] [Disabled].

The Intel® Active Management Technology requires the Intel® AMT-enabled software. Also,
the platform must be connected to a power source and an active LAN port.

P5Q-EM DO.indb 25 12/9/08 12:35:51 PM

2-26 Chapter 2: BIOS setup

2.5.3 Onboard Device Conguration

Select Screen

Select Item
+- Change Option
F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

Onboard Device Conguration

High Denition Audio [Enabled]

SPDIF Mode Setting [HDMI Output]
Front Panel Type [HD Audio]
LSI 1394 Controller [Enabled]
Marvell IDE Controller [Enabled]
Intel Onboard LAN Controller [Enabled]
Intel LAN Boot ROM [Disabled]

Serial Port1 Address [3F8/IRQ4]

Enable or Disable
High Denition Audio
Controller

BIOS SETUP UTILITY

Advanced

High Denition Audio [Enabled]

Allows you to enable or disable the High Denition Audio Controller.
Conguration options: [Enabled] [Disabled]

The following items appear only when you set the High Denition Audio item to [Enabled].

SPDIF Mode Setting [HDMI Output]

Allows you to set the SPDIF mode.

Conguration options: [HDMI Output] [SPDIF Output]

Front Panel Type [HD Audio]

Allows you to set the front panel audio connector (AAFP) mode to legacy AC’97 or

high-denition audio depending on the audio standard that the front panel audio
module supports. Conguration options: [AC97] [HD Audio]

LSI 1394 Controller [Enabled]

Allows you to enable or disable the onboard 1394 controller.

Conguration options: [Enabled] [Disabled]

Marvell IDE [Enabled]

Allows you to enable or disable the onboard Marvell IDE controller.

Conguration options: [Enabled] [Disabled]

Intel Onboard LAN Controller [Enabled]

Allows you to enable or disable the onboard LAN controller.

Conguration options: [Enabled] [Disabled]

Intel LAN Boot ROM [Disabled]

This item appears only when the Intel Onboard LAN Controller is enabled.

Conguration options: [Enabled] [Disabled]

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ASUS P5Q-EM DO 2-27

2.5.4 USB Conguration

The items in this menu allows you to change the USB-related features. Select an item then

press <Enter> to display the conguration options.

Select Screen

Select Item

+- Change Option

F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

USB Conguration

Module Version - 2.24.3-13.4

USB Devices Enabled:

1 Mouse

USB Functions [Enabled]

USB 2.0 Controller [Enabled]
USB 2.0 Controller Mode [HiSpeed]
BIOS EHCI Hand-off [Enabled]
Legacy USB Support [Auto]

Options

Disabled
Enabled

BIOS SETUP UTILITY

Advanced

The

USB Devices Enabled

item shows the auto-detected values. If no USB device is

detected, the item shows

None

.

Serial Port1 Address [3F8/IRQ4]

Allows you to select the Serial Port1 base address.

Conguration options: [Disabled] [3F8/IRQ4] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3]

USB Functions [Enabled]

Allows you to enable or disable the USB Host Controllers.

Conguration options: [Disabled] [Enabled]

The following items appear only when you set USB Functions to [Enabled].

USB 2.0 Controller [Enabled]

Allows you to enable or disable the USB 2.0 controller.

Conguration options: [Enabled] [Disabled]

The following item appears only when you enable the USB 2.0 Controller.

USB 2.0 Controller Mode [HiSpeed]

Allows you to set the USB 2.0 controller mode to HiSpeed (480 Mbps) or FullSpeed (12

Mbps). Conguration options: [FullSpeed] [HiSpeed]

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2-28 Chapter 2: BIOS setup

Legacy USB Support [Auto]

Allows you to enable or disable the support for legacy USB devices. Setting to [Auto] allows

the system to detect the presence of USB devices at startup. If detected, the USB controller
legacy mode is enabled. If no USB device is detected, the legacy USB support is disabled.

Conguration options: [Disabled] [Enabled] [Auto]

USB 2.0 Controller Mode [HiSpeed]

Allows you to set the USB 2.0 controller mode to HiSpeed (480 Mbps) or FullSpeed (12
Mbps).

Conguration options: [FullSpeed] [HiSpeed]

BIOS EHCI Hand-off [Enabled]

Allows you to enable the support for operating systems without an EHCI hand-off feature.

Conguration options: [Disabled] [Enabled]

2.5.5 PCIPnP

The PCIPnP menu items allow you to change the advanced settings for PCI/PnP devices.

Plug And Play O/S [No]

When set to [NO], BIOS congures all the devices in the system. When set to [YES] and if
you install a Plug and Play operating system, the operating system congures the Plug and

Play devices not required for boot.

Conguration options: [No] [Yes]

Advanced PCI/PnP Settings

WARNING: Setting wrong values in below sections
may cause system to malfunction.

Plug And Play O/S [No]

NO: lets the BIOS
congure all the
devices in the system.
YES: lets the
operating system
congure Plug and
Play (PnP) devices not
required for boot if

BIOS SETUP UTILITY

Advanced

P5Q-EM DO.indb 28 12/9/08 12:35:56 PM

ASUS P5Q-EM DO 2-29

TPM Conguration

TCG/TPM SUPPORT [NO]

Enable/Disable TPM
TCG (TPM 1.1/1.2)
supp in BIOS

BIOS SETUP UTILITY

Advanced

2.5.6 TPM Conguration

The items in this menu allow you to set the TPM (Trusted Platform Module) features. Select

an item then press <Enter> to display the conguration options.

The TPM Conguration item appears only when a TPM module is installed in this
motherboard.

TCG/TPM SUPPORT [YES]

Allows you to enable or disable TCG/TPM setting.

Conguration options: [YES] [NO]

The following items appear only when you set the TCG/TPM SUPPORT item to [YES].

TPM Enable / Disable Status [Disabled]

The item is not congurable.

TPM Owner Status [Unowned]

The item is not congurable

2.5.7 Intel® VT-d Conguration

The items in this menu allow you to enable or disable the Intel

®

Virtualization

Technology for Directed I/O (Intel® VT-d) feature. Select an item then press

<Enter> to display the conguration options.

Intel VT-d Conguration

Intel VT-d [Disabled]

BIOS SETUP UTILITY

Advanced

Options

Disabled
Enabled

Intel VT-d [Disabled]

Allows you to enable or disable the Intel® VT-d function.

Conguration options: [Disabled] [Enabled]

P5Q-EM DO.indb 29 12/9/08 12:35:58 PM

2-30 Chapter 2: BIOS setup

2.5.8 Intel® TXT(LT) Conguration

The items in this menu allow you to enable or disable the Intel® Trust Execution Technology
(Intel® TXT) feature. Select an item then press <Enter> to display the conguration options.

CongurE Intel TXT(LT) Parameters

Intel TXT Initialization [Disabled]

BIOS SETUP UTILITY

Advanced

Options

Disabled
Enabled

Intel TXT Initialization [Disabled]

Allows you to enable or disable the Intel® TXT Initialization.

Conguration options: [Disabled] [Enabled].

The following items show when you set Intel TXT Initialization option to [Enabled].

Congure Intel TXT(LT) Parameters

Intel TXT Initialization [Enabled]

BIOS AC [SCLEAN] [Enabled]
BIOS AC [SCHECK] [Enabled]
Lock DPR [Enabled]
Reset TPM Establishement Flag [Enabled]

Disabled

Enabled

When you set Intel TXT Initialization option to [Enabled], all of these items are set toIntel TXT Initialization option to [Enabled], all of these items are set to
[Enabled] automatically.

Options

P5Q-EM DO.indb 30 12/9/08 12:35:59 PM

ASUS P5Q-EM DO 2-31

2.6 Power menu

The Power menu items allow you to change the settings for the Advanced Power

Management (APM). Select an item then press <Enter> to display the conguration options.

2.6.1 Suspend Mode [Auto]

Allows you to select the Advanced Conguration and Power Interface (ACPI) state to be used

for system suspend.

Conguration options: [S1 (POS) Only] [S3 Only] [Auto]

2.6.2 Repost Video on S3 Resume [No]

Determines whether to invoke VGA BIOS POST on S3/STR resume.

Conguration options: [No] [Yes]

2.6.3 ACPI 2.0 Support [Disabled]

Add additional tables as per ACPI 2.0 specications.
Conguration options: [Disabled] [Enabled]

2.6.4 ACPI APIC Support [Enabled]

Allows you to enable or disable the Advanced Conguration and Power Interface (ACPI)
support in the Advanced Programmable Interrupt Controller (APIC). When set to [Enabled],
the ACPI APIC table pointer is included in the RSDT pointer list. Conguration options:
[Disabled] [Enabled]

BIOS SETUP UTILITY

Main Ai Tweaker Advanced Power Boot Tools Exit

Suspend Mode [Auto]
Repost Video on S3 Resume [No]
ACPI 2.0 Support [Disabled]
ACPI APIC Support [Enabled]

APM Conguration
Hardware Monitor

Select the ACPI state
used for System
Suspend.

P5Q-EM DO.indb 31 12/9/08 12:36:01 PM

2-32 Chapter 2: BIOS setup

Restore on AC Power Loss [Power Off]

When set to [Power Off], the system goes into off state after an AC power loss. When set to
[Power On], the system goes on after an AC power loss. When set to [Last State], the system

goes into either off or on state, whatever the system state was before the AC power loss.

Conguration options: [Power Off] [Power On] [Last State].

Power On By RTC Alarm [Disabled]

Allows you to enable or disable RTC to generate a wake event. When this item is set to

[Enabled], the items RTC Alarm Date / RTC Alarm Hour / RTC Alarm Minute / RTC Alarm
Second will become user-congurable with set values.
Conguration options: [Disabled] [Enabled].

Power On By External Modems [Disabled]

This allows either settings of [Enabled] or [Disabled] for powering up the computer when the
external modem receives a call while the computer is in Soft-off mode. Conguration options:
[Disabled] [Enabled].

The computer cannot receive or transmit data until the computer and applications are fully

running. Thus, connection cannot be made on the rst try. Turning an external modem
off and then back on while the computer is off causes an initialization string that turns the

system power on.

2.6.5 APM Conguration

BIOS SETUP UTILITY

Power

APM Conguration

Restore on AC Power Loss [Power Off]

Power On By RTC Alarm [Disabled]
Power On By External Modems [Disabled] [Disabled]
Power On By PCI Devices [Disabled] [Disabled]
Power On By PCIE Devices [Disabled]
Power On By PS/2 Keyboard [Disabled] PS/2 Keyboard [Disabled]
Power On By PS/2 Mouse [Disabled] PS/2 Mouse [Disabled]
GBE Lan Power [Enabled]

<Enter> to select
whether or not to
restart the system
after AC power loss.

Power On By PCI Devices [Disabled]

Allows you to enable or disable the PME to wake up from S5 by PCI devices. Conguration
options: [Disabled] [Enabled].

Power On By PCIe Devices [Disabled]

Allows you to enable or disable the PCIe devices to generate a wake event. Conguration
options: [Disabled] [Enabled].

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ASUS P5Q-EM DO 2-33

Power On By PS/2 Keyboard [Disabled]

Allows you to use specic keys on the keyboard to turn on the system. This feature requires
an ATX power supply that provides at least 1A on the +5VSB lead. Conguration options:
[Disabled] [Space Bar] [Ctrl-Esc] [Power Key].

Power On By PS/2 Mouse [Disabled]

When set to [Enabled], this parameter allows you to use the PS/2 mouse to turn on the

system. This feature requires an ATX power supply that provides at least 1A on the +5VSB

lead. Conguration options: [Disabled] [Enabled].

GBE Lan Power [Enabled]

Allows you to enable or disable the Gigabit LAN Power.

Conguration options: [Enabled] [Disabled]

P5Q-EM DO.indb 33 12/9/08 12:36:02 PM

2-34 Chapter 2: BIOS setup

CPU Temperature [xxxºC/xxxºF]
MB Temperature [xxxºC/xxxºF]

The onboard hardware monitor automatically detects and displays the motherboard and CPU

temperatures. Select [Ignored] if you do not wish to display the detected temperatures.

CPU Fan Speed [xxxxRPM] or [Ignored] / [N/A]

The onboard hardware monitor automatically detects and displays the CPU fan speed in

rotations per minute (RPM). If the fan is not connected to the motherboard, the eld shows

N/A.

Chassis Fan Speed [xxxxRPM] or [Ignored] / [N/A]

The onboard hardware monitor automatically detects and displays the chassis fan speed in

rotations per minute (RPM). If the fan is not connected to the motherboard, the eld shows

N/A.

Power Fan Speed [xxxxRPM] or [Ignored] / [N/A]

The onboard hardware monitor automatically detects and displays the power fan speed in

rotations per minute (RPM). If the fan is not connected to the motherboard, the eld shows

N/A.

VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage

The onboard hardware monitor automatically detects the voltage output through the onboard

voltage regulators. Select [Ignored] if you do not wish to display these items.

2.6.6 Hardware Monitor

Select Screen

Select Item

+- Change Field

F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

Hardware Monitor

CPU Temperature [47ºC/116.5ºF]

MB Temperature [32ºC/89.5ºF]

CPU Fan Speed [2373RPM]
Chassis Fan Speed [N/A]
Power Fan Speed [N/A]

VCORE Voltage [1.296V]

3.3V Voltage [ 3.248V]
5V Voltage [ 5.112V]
12V Voltage [12.096V]

ASUS Adavanced Q-Fan Control

Fan Prole [Silent]

CPU Temperature

BIOS SETUP UTILITY

Power

ASUS Advanced Q-Fan Control

Fan Profile

Allows you to select the fan prole. Conguration options: [Disabled] [Performance]
[Optimal] [Silent] [Ultra Silent].

The option of “Ultra Silent” is for Intel® Core™2 processors only.

P5Q-EM DO.indb 34 12/9/08 12:36:04 PM

ASUS P5Q-EM DO 2-35

2.7 Boot menu

The Boot menu items allow you to change the system boot options. Select an item then press
<Enter> to display the sub-menu.

2.7.1 Boot Device Priority

BIOS SETUP UTILITY

Boot

Species the boot
sequence from the
availabe devices.

A device enclosed
in parenthesis has
been disabled in the
corresponding menu.

Boot Device Priority

1st Boot Device [1st FLOPPY DRIVE]
2nd Boot Device [Hard Drive]
3rd Boot Device [ATAPI CD-ROM]

1st ~ xxth Boot Device [xxx Drive]

These items specify the boot device priority sequence from the available devices. The
number of device items that appears on the screen depends on the number of devices

installed in the system. Conguration options: [xxx Drive] [Disabled]

Select Screen

Select Item
Enter Go to Sub Screen
F1 General Help
F10 Save and Exit
ESC Exit

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

Boot Settings

Boot Device Priority

Boot Settings Conguration
Security

Species the Boot
Device Priority
sequence.

A virtual oppy disk
drive (Floppy Drive B:)
may appear when you set
the CD-ROM drive as the
rst boot device.

BIOS SETUP UTILITY

Main Ai Tweaker Advanced Power Boot Tools Exit

P5Q-EM DO.indb 35 12/9/08 12:36:06 PM

2-36 Chapter 2: BIOS setup

2.7.2 Boot Settings Conguration

Set this item to [Enabled] to use the ASUS MyLogo2™ feature.

Quick Boot [Enabled]

Enabling this item allows the BIOS to skip some power on self tests (POST) while booting to

decrease the time needed to boot the system. When set to [Disabled], BIOS performs all the
POST items. Conguration options: [Disabled] [Enabled]

Full Screen Logo [Enabled]

This allows you to enable or disable the full screen logo display feature. Conguration
options: [Disabled] [Enabled].

Add On ROM Display Mode [Force BIOS]

Sets the display mode for option ROM.

Conguration options: [Force BIOS] [Keep Current].

Bootup Num-Lock [On]

Allows you to select the power-on state for the NumLock.

Conguration options: [Off] [On].

Wait for ‘F1’ If Error [Enabled]

When set to Enabled, the system waits for the F1 key to be pressed when error occurs.

Conguration options: [Disabled] [Enabled].

Hit ‘DEL’ Message Display [Enabled]

When set to Enabled, the system displays the message “Press DEL to run Setup” during

POST. Conguration options: [Disabled] [Enabled].

BIOS SETUP UTILITY

Boot

Allows BIOS to skip
certain tests while
booting. This will
decrease the time
needed to boot the
system.

Boot Settings Conguration

Quick Boot [Enabled]

Full Screen Logo [Enabled]
AddOn ROM Display Mode [Force BIOS]
Bootup Num-Lock [On]
Wait For ‘F1’ If Error [Enabled]
Hit ‘DEL’ Message Display [Enabled]

P5Q-EM DO.indb 36 12/9/08 12:36:07 PM

ASUS P5Q-EM DO 2-37

If you forget your BIOS password, you can clear clear it by erasing the CMOS Real Time
Clock (RTC) RAM. See section “1.9 Jumpers” for information on how to erase the RTC
RAM.

2.7.3 Security

The Security menu items allow you to change the system security settings. Select an item

then press <Enter> to display the conguration options.

Change Supervisor Password

Select this item to set or change the supervisor password. The Supervisor Password item on
top of the screen shows the default Not Installed. After you set a password, this item shows
Installed.

To set a Supervisor Password:

1. Select the Change Supervisor Password item and press <Enter>.

2. From the password box, type a password composed of at least six letters and/or
numbers, then press <Enter>.

3. Conrm the password when prompted.

The message “Password Installed” appears after you successfully set your password.

To change the supervisor password, follow the same steps as in setting a user password.

To clear the supervisor password, select the Change Supervisor Password then press
<Enter>. The message “Password Uninstalled” appears.

4.6.1 Boot Device Priority

BIOS SETUP UTILITY

Boot

Security Settings

Supervisor Password : Not Installed
User Password : Not Installed

Change Supervisor Password

Change User Password

<Enter> to change

password.
<Enter> again to
disabled password.

P5Q-EM DO.indb 37 12/9/08 12:36:08 PM

2-38 Chapter 2: BIOS setup

After you have set a supervisor password, the other items appear to allow you to change
other security settings.

User Access Level [Full Access]

This item allows you to select the access restriction to the Setup items. Conguration options:
[No Access] [View Only] [Limited] [Full Access]

No Access prevents user access to the Setup utility.

View Only allows access but does not allow change to any eld.

Limited allows changes only to selected elds, such as Date and Time.

Full Access allows viewing and changing all the elds in the Setup utility.

Change User Password

Select this item to set or change the user password. The User Password item on top of the
screen shows the default Not Installed. After you set a password, this item shows Installed.

To set a User Password:

1. Select the Change User Password item and press <Enter>.

2. On the password box that appears, type a password composed of at least six letters
and/or numbers, then press <Enter>.

3. Conrm the password when prompted.

The message “Password Installed” appears after you set your password successfully.

To change the user password, follow the same steps as in setting a user password.

Clear User Password

Select this item to clear the user password.

4.6.1 Boot Device Priority

BIOS SETUP UTILITY

Boot

Security Settings

Supervisor Password : Not Installed
User Password : Not Installed

Change Supervisor Password
User Access Level [Full Access]
Change User Password
Clear User Password
Password Check [Setup]

<Enter> to change
password.
<Enter> again to
disabled password.

Password Check [Setup]

When set to [Setup], BIOS checks for user password when accessing the Setup utility. When
set to [Always], BIOS checks for user password both when accessing Setup and booting the
system. Conguration options: [Setup] [Always]

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ASUS P5Q-EM DO 2-39

2.8 Tools menu

The Tools menu items allow you to congure options for special functions. Select an item

then press <Enter> to display the sub-menu.

ASUS EZ Flash 2

ASUS EZ Flash 2

Allows you to run ASUS EZ Flash 2. When you press <Enter>, a conrmation message
appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to
conrm your choice. Please see page 2-2, section 2.1.2 for details.

Press ENTER to run
the utility to select
and update BIOS.
This utility doesn't
support :

1.NTFS format

v02.61 (C)Copyright 1985-2008, American Megatrends, Inc.

ASUSTek EZ Flash 2 BIOS ROM Utility V3.25

Current ROM

Update ROM

A:

Note

[Enter] Select or Load [Tab] Switch [ V ] D r i v e I n f o
[Up/Down/Home/End] Move [B] Backup [ESC] Exit

FLASH TYPE: MXIC 25L1605A

PATH: A:\

BOARD: P5Q-EM-DO
VER: 0211(H:00 B:00)

DATE: 08/26/08

BOARD: Unknown
VER: Unknown

DATE: Unknown

P5Q-EM DO.indb 39 12/9/08 12:36:11 PM

2-40 Chapter 2: BIOS setup

Exit & Discard Changes

Select this option only if you do not want to save the changes that you made to the

Setup program. If you made changes to elds other than System Date, System Time, and
Password, the BIOS asks for a conrmation before exiting.

Discard Changes

This option allows you to discard the selections you made and restore the previously saved
values. After selecting this option, a conrmation appears. Select OK to discard any changes
and load the previously saved values.

Load Setup Defaults

This option allows you to load the default values for each of the parameters on the Setup

menus. When you select this option or if you press <F5>, a conrmation window appears.

Select OK to load default values. Select Exit & Save Changes or make other changes
before saving the values to the non-volatile RAM.

Exit & Save Changes

Once you are nished making your selections, choose this option from the Exit menu to

ensure the values you selected are saved to the CMOS RAM. An onboard backup battery
sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this
option, a conrmation window appears. Select OK to save changes and exit.

2.9 Exit menu

Pressing <Esc> does not immediately exit this menu. Select one of the options from this
menu or <F10> from the legend bar to exit.

The Exit menu items allow you to load the optimal or failsafe default values for the BIOS
items, and save or discard your changes to the BIOS items.

If you attempt to exit the Setup program without saving your changes, the program prompts
you with a message asking if you want to save your changes before exiting. Press <Enter>
to save the changes while exiting.

BIOS SETUP UTILITY

Main Advanced Power Boot Tools Exit

Exit Options

Exit & Save Changes

Exit & Discard Changes
Discard Changes

Load Setup Defaults

Exit system setup
after saving the
changes.

F10 key can be
used for this
operation.

P5Q-EM DO.indb 40 12/9/08 12:36:12 PM

ASUS P5Q-EM DO 2-41

2.10 Intel® ME conguration

This function allows you to congure the Intel® Management Engine (ME) settings.

Ensure that the ME function is enabled before conguring the settings. To enable the ME

function, refer to pages 1-26 and 2-24 for details.

To open the Intel® ME Setup

The following screen appears after the Power-On-Self-Test (POST). Press <Ctrl> + P to
launch the Intel® ME Setup screen.

Intel(R) Management Engine BIOS Extension v5.0.5.0001
Copyright(C) 2003-08 Intel Coporation. All Rights Reserved.

Intel(R) ME Firmware version 5.0.0.1098
Press <CTRL-P> to enter Intel(R) ME Setup.

2.10.1 Change Intel® ME password

You are required to change the password when entering the setup for the rst time.
By default , the password is admin.

To change the password:

1. Key in admin in the Intel(R) ME Password area, then press <Enter>.

2. Key in a new password in the Intel(R) ME New Password area and press <Enter>.

3. Key in the password again in the Verify Password area and press <Enter>.

A valid password must include uppercase and lowercase letters, special characters (such
as ~,%,*,#), and numbers.

Intel(R) Management Engine BIOS Extension v5.0.5.0001

Copyright(C) 2003-08 Intel Coporation. All Rights Reserved.

Intel(R) ME Conguration
Change Intel(R) ME Password
Exit

[ MAIN MENU ]

[ESC]=Exit [Enter]=Access

Intel(R) ME Password

P5Q-EM DO.indb 41 12/9/08 12:36:13 PM

2-42 Chapter 2: BIOS setup

2.10.2 Intel® ME Conguration

Select Intel(R) ME Conguration and press <Enter>. The following message appears to

remind you that the system resets after the conguration changes. Press <Y> to continue or

<N> to cancel.

[Caution]

System resets after conguration changes

Continue: (Y/N)

Intel® ME State Control

Allows you to enable or disable the Intel® ME State Control function. Select Intel(R) ME State
Control and press <Enter> to display the conguration options. Press < > or < > to

select and press <Enter> to conrm the selection.

Intel(R) Management Engine BIOS Extension v5.0.5.0001

Copyright(C) 2003-08 Intel Coporation. All Rights Reserved.

[ Intel(R) ME PLATFORM CONFIGURATION ]

[ESC]=Exit [ ]=Select [Enter]=Access

Intel(R) ME State Control

Return to Previous Menu

[*] DISABLED

[ ] ENABLED

Intel® ME Firmware Local Update

Allows you to enable or disable the Intel® ME Firmware Local Update function. Conguration

options: [DISABLED] [ENABLED]

Intel® ME Features Control

Allows you to congure the Intel® ME Features Control function. Select Intel® ME Features
Control and press <Enter> to display the submenu.

The following items appear only when the Intel® ME State Control item is set to

[ENABLED]. When the setting is changed from [DISABLED] to [ENABLED], your computer

resets automatically to apply the change.

P5Q-EM DO.indb 42 12/9/08 12:36:15 PM

ASUS P5Q-EM DO 2-43

Intel(R) Management Engine BIOS Extension v5.0.5.0001

Copyright(C) 2003-08 Intel Coporation. All Rights Reserved.

[ Intel(R) ME FEATURES CONTROL ]

[ESC]=Exit [ ]=Select [Enter]=Access

Manageability Feature Selection

Intel(R) Quiet System Technology
Return to Previous Menu

[*] None

[ ] Intel(R) Standard Manageability
[ ] ASF

Manageability Feature Select [NONE]

Allows you to select the Intel® Manageability feature. Conguration options: [NONE]

[Intel(R) Standard Manageability] [ASF]

Intel® Quiety System Technology

Allows you to enable or disable the Intel® Quiet System Technology. Conguration

options: [DISABLED] [ENABLED]

Intel® ME Power Control

Allows you to congure the Intel® ME Power Control function. Select Intel® ME Power
Control and press <Enter> to display the submenu.

Intel(R) Management Engine BIOS Extension v5.0.5.0001

Copyright(C) 2003-08 Intel Coporation. All Rights Reserved.

[ Intel(R) ME FEATURES CONTROL ]

[ESC]=Exit [ ]=Select [Enter]=Access

Intel(R) ME ON in Host Sleep States

Return to Previous Menu

[*] Desktop: ON in S0

[ ] Desktop: ON in S0, S3
[ ] Desktop: ON in S0, S3, S4-5
[ ] Desktop: ON in S0, ME Wake in S3
[ ] Desktop: ON in S0, ME Wake in S3, S4-5
[ ] Desktop: ON in S0, S3, S4-5, OFF After Power Loss
[ ] Desktop: ON in S0, ME Wake in S3, S4-5, OFF After Power Loss

Intel® ME ON in Host Sleep States

Allows you to select the sleep modes for Intel® ME function to turn on/off or wake up.

P5Q-EM DO.indb 43 12/9/08 12:36:16 PM

2-44 Chapter 2: BIOS setup

2.10.3 Exit menu

To exit the Intel® ME setup, select Exit from the Main menu and press <Enter>. When the

conrmation message appears, press <Y> to exit or press <N> to cancel.

Are you sure you want to exit? (Y/N)

[ CONFIRM EXIT ]

Return to the previous menu

Allows you to return to the previous screen. Select Return to the previous menu and press
<Enter>. You can also press <Esc> to return to the previous screen.

P5Q-EM DO.indb 44 12/9/08 12:36:16 PM

3

Chapter 3: Software

support

This chapter describes the contents of the
Support DVD that comes with the motherboard
package.

P5Q-EM DO.indb 1 12/9/08 12:36:19 PM

ASUS P5Q-EM DO

Chapter summary

3

3.1 Installing an operating system .................................................................3-1

3.2 Support DVD information .......................................................................... 3-1

3.3 Creating a RAID driver disk.......................................................................3-9

P5Q-EM DO.indb 2 12/9/08 12:36:20 PM

ASUS P5Q-EM DO 3-1

If Autorun is NOT enabled in your computer, browse the contents of the Support DVD to
locate the le ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run
the DVD.

3.1 Installing an operating system

This motherboard supports Windows® 32-bit XP/32-bit Vista/64-bit XP/64-bit Vista operating

systems (OS). Always install the latest OS version and corresponding updates to maximize

the features of your hardware.

3.2 Support DVD information

The Support DVD that came with the motherboard package contains the drivers, software
applications, and utilities that you can install to avail all motherboard features.

3.2.1 Running the Support DVD

Place the Support DVD to the optical drive. The DVD automatically displays the Drivers menu
if Autorun is enabled in your computer.

• Motherboard settings and hardware options vary. Use the setup
procedures presented in this chapter for reference only. Refer to your OS
documentation for detailed information.

• Make sure that you install Windows® XP Service Pack2 or later versions
before installing the drivers for better compatibility and system stability.

The contents of the Support DVD are subject to change at any time without notice. Visit the
ASUS website(www.asus.com) for updates.

Click an item to install

Click an icon to
display Support DVD/
motherboard information

P5Q-EM DO.indb 1 12/9/08 12:36:22 PM

3-2 Chapter 3: Software support

3.2.2 Drivers menu

The drivers menu shows the available device drivers if the system detects installed devices.
Install the necessary drivers to activate the devices.

ASUS InstAll-Installation Wizard for Anti-Virus and Drivers Utility

Installs the ASUS InstAll installation wizard.

Norton Internet Security 2008

Installs the Norton Internet Security 2008 to protect your PC from the latest online threads.

Intel Chipset Inf Update Program

Installs the Intel® chipset inf update program.

Realtek Audio Driver

Installs the Realtek Audio driver.

Intel Graphics Accelerator Driver

Instals the Intel® Graphics Accelerator Driver.

Intel(R) LAN Driver

Installs the Intel® LAN driver.

USB 2.0 Driver

Installs the USB 2.0 driver.

P5Q-EM DO.indb 2 12/9/08 12:36:23 PM