Asus PQ5C User Manual

P5QC

Motherboard

E3810

First Edition
June 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.

ii

Contents

Contents ...................................................................................................... iii

Notices ....................................................................................................... viii

Safety information ...................................................................................... ix

About this guide .......................................................................................... x

P5QC specications summary ................................................................. xii

Chapter 1: Product introduction

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

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

1.3 Special features ............................................................................ 1-2

1.3.1 Product highlights ........................................................... 1-2

1.3.2 ASUS unique features .................................................... 1-3

1.3.3 ASUS Intelligent Performance and

Overclocking features ..................................................... 1-7

Chapter 2: Hardware information

2.1 Before you proceed ..................................................................... 2-1

Onboard LED ................................................................................. 2-1

2.2 Motherboard overview ................................................................. 2-2

2.2.1 Motherboard layout ......................................................... 2-2

2.2.2 Layout contents ............................................................... 2-3

2.2.3 Placement direction ........................................................ 2-4

2.2.4 Screw holes .................................................................... 2-4

2.3 Central Processing Unit (CPU) ................................................... 2-5

2.3.1 Installing the CPU ........................................................... 2-6

2.3.2 Installing the CPU heatsink and fan ................................ 2-9

2.3.3 Uninstalling the CPU heatsink and fan ......................... 2-10

2.4 System memory ......................................................................... 2-11

2.4.1 Overview ........................................................................2-11

2.4.2 Memory congurations .................................................. 2-12

2.4.3 Installing a DIMM .......................................................... 2-17

2.4.4 Removing a DIMM ........................................................ 2-17

2.5 Expansion slots .......................................................................... 2-18

2.5.1 Installing an expansion card ......................................... 2-18

2.5.2 Conguring an expansion card ..................................... 2-18

2.5.3 Interrupt assignments ................................................... 2-19

iii

Contents

2.5.4 PCI slots ........................................................................ 2-20

2.5.5 PCI Express x1 slots ..................................................... 2-20

2.5.6 PCI Express 2.0 x16 slot ............................................... 2-20

2.6 Jumpers ...................................................................................... 2-21

2.7 Connectors ................................................................................. 2-24

2.7.1 Rear panel connectors .................................................. 2-24

2.7.2 Internal connectors ....................................................... 2-26

2.8 Starting up for the rst time ...................................................... 2-39

2.9 Turning off the computer ........................................................... 2-40

2.9.1 Using the OS shut down function .................................. 2-40

2.9.2 Using the dual function power switch ............................ 2-40

Chapter 3: BIOS setup

3.1 Managing and updating your BIOS ............................................ 3-1

3.1.1 ASUS Update utility ........................................................ 3-1

3.1.2 ASUS EZ Flash 2 utility ................................................... 3-4

3.1.3 AFUDOS utility ................................................................ 3-5

3.2 BIOS setup program .................................................................... 3-7

3.2.1 BIOS menu screen .......................................................... 3-8

3.2.2 Menu bar ......................................................................... 3-8

3.2.3 Navigation keys ............................................................... 3-8

3.2.4 Menu items ..................................................................... 3-9

3.2.5 Sub-menu items .............................................................. 3-9

3.2.6 Conguration elds ......................................................... 3-9

3.2.7 Pop-up window ............................................................... 3-9

3.2.8 Scroll bar ......................................................................... 3-9

3.2.9 General help ................................................................... 3-9

3.3 Main menu .................................................................................. 3-10

3.3.1 System Time ................................................................. 3-10

3.3.2 System Date ................................................................. 3-10

3.3.3 Legacy Diskette A ......................................................... 3-10

3.3.4 Language ...................................................................... 3-10

3.3.5 SATA 1-6 ........................................................................3-11

3.3.6 Storage Conguration ................................................... 3-12

3.3.7 AHCI Conguration ....................................................... 3-13

3.3.8 System Information ....................................................... 3-14

iv

Contents

3.4 Ai Tweaker menu ........................................................................ 3-15

3.4.1 Ai Overclock Tuner ....................................................... 3-15

3.4.2 CPU Ratio Setting ........................................................ 3-16

3.4.3 FSB Strap to North Bridge ........................................... 3-16

3.4.4 DRAM Frequency ........................................................ 3-16

3.4.5 DRAM Timing Control .................................................. 3-17

3.4.6 DRAM Static Read Control .......................................... 3-18

3.4.7 DRAM Dynamic Write Control ...................................... 3-18

3.4.8 DRAM Read Training ................................................... 3-18

3.4.9 DRAM Write Training ................................................... 3-19

3.4.10 MEM. OC Charger ....................................................... 3-19

3.4.11 Ai Clock Twister ............................................................ 3-19

3.4.12 Ai Transaction Booster ................................................. 3-19

3.4.13 CPU Voltage ............................................................... 3-19

3.4.14 CPU PLL Voltage ......................................................... 3-20

3.4.15 FSB Termination Voltage .............................................. 3-20

3.4.16 DRAM Voltage ............................................................. 3-20

3.4.17 NB Voltage ................................................................... 3-20

3.4.18 SB Voltage ................................................................... 3-21

3.4.19 PCIE SATA Voltage ...................................................... 3-21

3.4.20 Load-Line Calibration ................................................... 3-21

3.4.21 CPU Spread Spectrum ................................................ 3-21

3.4.22 PCIE Spread Spectrum ................................................ 3-21

3.5 Advanced menu ......................................................................... 3-22

3.5.1 CPU Conguration ........................................................ 3-22

3.5.2 Chipset .......................................................................... 3-24

3.5.3 Onboard Device Conguration ...................................... 3-25

3.5.4 USB Conguration ........................................................ 3-26

3.5.5 PCIPnP ......................................................................... 3-27

3.6 Power menu ................................................................................ 3-28

3.6.1 Suspend Mode ............................................................. 3-28

3.6.2 Repost Video on S3 Resume ........................................ 3-28

3.6.3 ACPI 2.0 Support .......................................................... 3-28

3.6.4 ACPI APIC Support ....................................................... 3-28

3.6.5 APM Conguration ........................................................ 3-29

v

Contents

3.6.6 Hardware Monitor ......................................................... 3-30

3.7 Boot menu .................................................................................. 3-32

3.7.1 Boot Device Priority ...................................................... 3-32

3.7.2 Boot Settings Conguration .......................................... 3-33

3.7.3 Security ......................................................................... 3-34

3.8 Tools menu ................................................................................. 3-36

3.8.1 ASUS EZ Flash 2 .......................................................... 3-36

3.8.2 Drive Xpert Control ...................................................... 3-37

3.8.3 Drive Xpert Mode Update ............................................. 3-37

3.8.4 Express Gate ................................................................ 3-38

3.8.5 ASUS O.C. Prole ......................................................... 3-39

3.8.6 AI NET 2........................................................................ 3-40

3.9 Exit menu .................................................................................... 3-41

Chapter 4: Software support

4.1 Installing an operating system ................................................... 4-1

4.2 Support DVD information ............................................................ 4-1

4.2.1 Running the support DVD ............................................... 4-1

4.2.2 Drivers menu ................................................................... 4-2

4.2.3 Utilities menu .................................................................. 4-3

4.2.4 Make disk menu .............................................................. 4-5

4.2.5 Manual menu .................................................................. 4-6

4.2.6 ASUS Contact information .............................................. 4-6

4.2.7 Other information ............................................................ 4-7

4.3 Software information ................................................................... 4-9

4.3.1 ASUS MyLogo 2™ .......................................................... 4-9

4.3.2 AI NET2 .........................................................................4-11

4.3.3 ASUS PC Probe II ......................................................... 4-12

4.3.4 ASUS AI Suite ............................................................... 4-18

4.3.5 ASUS AI Nap ................................................................ 4-20

4.3.6 ASUS Fan Xpert ........................................................... 4-21

4.3.7 ASUS AI Booster ........................................................... 4-23

4.3.8 ASUS EPU–6 Engine .................................................... 4-24

4.3.9 ASUS AI Direct Link ...................................................... 4-28

4.3.10 Audio congurations ..................................................... 4-30

4.3.11 ASUS Drive Xpert ......................................................... 4-38

vi

Contents

4.3.12 ASUS Express Gate ..................................................... 4-49

4.4 RAID congurations .................................................................. 4-59

4.4.1 RAID denitions ............................................................ 4-59

4.4.2 Installing Serial ATA hard disks ..................................... 4-60

4.4.3 Intel® RAID congurations ............................................. 4-60

4.5 Creating a RAID driver disk ....................................................... 4-68

4.5.1 Creating a RAID driver disk without entering the OS .... 4-68

4.5.2 Creating a RAID driver disk in Windows®...................... 4-68

Appendix: CPU features

A.1 Intel® EM64T ..................................................................................A-1

Using the Intel® EM64T feature ......................................................A-1

A.2 Enhanced Intel SpeedStep® Technology (EIST) ........................A-1

A.2.1 System requirements ......................................................A-1

A.2.2 Using the EIST ................................................................A-2

A.3 Intel® Hyper-Threading Technology ...........................................A-3

Using the Hyper-Threading Technology ........................................ A-3

vii

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.

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.

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.

viii

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.

This symbol of the crossed out wheeled bin indicates that the product (electrical,
electronic equipment and mercury-containing button cell battery) should not
be placed in municipal waste. Check local regulations for disposal of electronic
products.

ix

About this guide

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

the motherboard.

How this guide is organized

This guide contains the following parts:

• Chapter 1: Product introduction

This chapter describes the features of the motherboard and the new
technology it supports.

• Chapter 2: Hardware information

This chapter lists the hardware setup procedures that you have to perform
when installing system components. It includes description of the switches,
jumpers, and connectors on the motherboard.

• Chapter 3: 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 4: Software support

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

• Appendix: CPU features

The Appendix describes the CPU features and technologies that the
motherboard supports.

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.

x

Conventions used in this guide

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

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.

IMPORTANT: Instructions that you MUST follow to complete a

task.

NOTE: Tips and additional information to help you complete a

task.

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 /iP5QC.ROM

xi

P5QC specications summary

CPU

Chipset Intel® P45 / ICH10R with Intel® Fast Memory Access

System Bus 1600 / 1333 / 1066 / 800 MHz

Memory

Expansion Slots

Storage Intel® ICH10R Southbridge:

LAN

Audio

IEEE 1394

USB

LGA775 socket for Intel® Core™2 Extreme /
Core™2 Quad /Core™2 Duo / Pentium® dual-core /
Celeron® dual-core / Celeron® Processors
Compatible with Intel® 05B/05A/06 processors
Intel® 45nm Multi-Core CPU support
* Refer to www.asus.com for Intel CPU support list

Technology

2 x DIMM, max. 8GB, DDR3 1333 / 1066 / 800 MHz,
non-ECC, un-buffered memory
4 x DIMM, max. 16GB, DDR2 1066 / 800 / 667 MHz,
non-ECC, un-buffered memory
Dual channel memory architecture

* DDR2 1066MHz DIMMs work only on the black slots for

one DIMM per channel. Ensure to install the DDR2
1066MHz DIMMs ONLY on the BLACK slots!
* Refer to www.asus.com or this user manual for the

Memory QVL (Qualied Vendors Lists).

1 x PCIe 2.0 x16 slot supports PCIe 2.0 mode
3 x PCIe x1 slots
2 x PCI slots

- 6 x SATA 3.0 Gb/s ports

- Intel® Matrix Storage supporting SATA RAID 0,1,
5, and 10 and Mix Mode (Intel matrix storage tech.)
Marvell 88SE6111 controller:

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

- 1 x SATA 3.0 Gb/s for Drive Xpert

Silicon Image SIL5723 controller (Drive Xpert
Technology):

- 2 x SATA 3.0 Gb/s ports

- Supports RAID 0 and RAID 1

PCIe Gigabit LAN controller, featuring AI NET2

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

- Supports Jack-Detecting, Multi-streaming, and Front
Panel Jack-Retasking

- Coaxial S/PDIF out ports at back I/O

- ASUS Noise-Filtering

LSI® L-FW3227 1394a controller supports 2 x IEEE
1394a ports (one at mid-board, one at back panel)

12 x USB 2.0 ports (6 ports at mid-board, 6 ports at back
panel)

(continued on the next page)

xii

P5QC specications summary

ASUS Unique features ASUS Power Saving Solution:

ASUS Exclusive
Overclocking Features

- ASUS 3rd Generation 8-Phase Power Design

- ASUS EPU-6 Engine

- ASUS AI Nap

ASUS AI Life Features:

- ASUS Express Gate

- ASUS MyLogo 2

- ASUS AI Direct Link

ASUS Quiet Thermal Solution:

- ASUS Fanless Design: Stylish heatsink

- ASUS Fan Xpert

ASUS EZ DIY:

- ASUS Drive Xpert

- ASUS Q-Shield

- ASUS Q-Connector

- ASUS O.C. Prole

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 2

ASUS AI Booster utility
Precision Tweaker 2:

- vCore: Adjustable CPU voltage at 6.25mV
increment

- vDIMM: 64-step DRAM voltage control

- vChipset (N.B.): 40-step chipset voltage control

- vCPU PLL: 64-step reference voltage control

- vFSB Termination: 15-step Hyper Transport voltage
control

SFS (Stepless Frequency Selection)

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

- Memory tuning from 667MHz to 1333MHz for DDR2

- Memory tuning from 200MHz to 2000MHz for DDR3

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

Overclocking Protection:

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

(continued on the next page)

xiii

P5QC specications summary

Back Panel I/O Ports

Internal I/O Connectors

BIOS Features

Manageability

Support DVD Contents Drivers

Form Factor ATX Form Factor, 12”x 9.6” (30.5cm x 24.4cm)

*Specications are subject to change without notice.

1 x PS/2 keyboard port (Purple)
1 x PS/2 mouse port (Green)
1 x S/PDIF Out (Coaxial)
1 x IEEE1394a port
1 x RJ45 port
6 x USB 2.0/1.1 ports
8-channel Audio I/O ports

3 x USB connectors support additional 6 USB ports
1 x Floppy disk drive connector
1 x COM connector
1 x IDE connector
6 x SATA connectors
2 x Drive Xpert SATA connectors
1 x CPU Fan connector
2 x Chassis Fan connectors
1 x Power Fan connector
1 x IEEE1394a connector
Front panel audio connector
1 x S/PDIF Out Header
Chassis Intrusion connector
CD audio in
24-pin ATX Power connector
8-pin ATX 12V Power connectors
System Panel (Q-Connector)

8 Mb AMI BIOS, PnP, DMI 2.0, WfM 2.0, SM BIOS 2.4

WOL by PME, WOR by PME, WOR by Ring, PXE,

ASUS PC Probe II
ASUS Update
ASUS AI Suite
Image-Editing Suite
Anti-virus software

(OEM version)

xiv

This chapter describes the motherboard
features and the new technologies it
supports.

introduction

Product

1

Chapter summary

1

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

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

1.3 Special features ............................................................................ 1-2

ASUS P5QC

1.1 Welcome!

Thank you for buying an ASUS® P5QC 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.

1.2 Package contents

Check your motherboard package for the following items.

Motherboard ASUS P5QC

I/O modules 1 x 1-port eSATA and 1-port 1394 (4-pin) module

Cables 1 x 2-port Serial ATA power cables
6 x Serial ATA signal cables
1 x Ultra DMA 133/100/66 cable
1 x Floppy disk drive cable

Accessories 1 x ASUS Q-Shield (I/O shield)
1 x ASUS Q-Connector Kit (USB, 1394, system

panel; Retail version only)

Application DVD ASUS motherboard support DVD

Documentation User guide

ASUS P5QC

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

1-1

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/packagings to safeguard

consumers’ health while minimizing the impact on the environment.

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 1600 / 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 P45 Chipset

The Intel® P45 Express Chipset is the latest chipset designed to support dual­channel DDR3 1066 / 800 or DDR2 800 / 667 architecture, 1333 / 1066 / 800
FSB (Front Side Bus), PCIe 2.0, and multi-core CPUs. It especially includes Intel®

Fast Memory Access technology that signicantly optimizes the use of available

memory bandwidth and reduces the latency of the memory accesses.

DDR3 memory support

The motherboard supports DDR3 memory that features data transfer rates of

1333 / 1066 / 800 MHz to meet the higher bandwidth requirements of the latest

3D graphics, multimedia, and Internet applications. The dual-channel DDR3
architecture doubles the bandwidth of your system memory to boost system

performance. 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 2-13 for

details.

1-2 Chapter 1: Product Introduction

DDR2 memory support

The motherboard supports DDR2 memory that features data transfer rates of

1066/800/667 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. See
page 2-13 for details.

PCIe 2.0

This motherboard supports the latest PCIe 2.0 device for twice the current speed
and bandwidth. This enhances system performance while still providing backward
compatibility to PCIe 1.0 devices.

Serial ATA 3 Gb/s technology and SATA-On-The-Go

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

storage specication, delivering enhanced scalability and doubling the bus

bandwidth for high-speed data retrieval and saves. The external SATA port located
at the back I/O provides smart setup and hot-plug functions. Easily backup photos,
videos and other entertainment contents to external devices.

1.3.2 ASUS unique features

ASUS Express Gate

Taking only 5 seconds to go online from bootup, Express Gate is the one-stop

gateway to instant fun! It’s a unique motherboard built-in OS. You can utilize the

most popular Instant Messengers (IM) like MSN, Skype, Google talk, QQ, and

Yahoo! Messenger to keep in touch with friends, or quickly check on the weather
and e-mails just before leaving your house. What’s more, the user-friendly picture
manager lets you view your pictures without entering Windows at anytime!

• The actual boot time depends on the system conguration.

• ASUS Express Gate supports le uploading from SATA HDDs, ODDs and

USB drive and downloading to USB drives only.

ASUS P5QC

1-3

ASUS 3rd Generation 8 Phase Power Design

Longer Life, & Higher Efciency!

With power efciency so important to operating temperatures, ASUS' 3rd
generation 8-phase VRM design leads the industry with its 95% power efciency.

High quality power components such as low RDS (on) MOSFETs for minimum
switching loss & lower temperatures, Ferrite core chokes with lower hysteresis
loss, and high quality Japanese-made conductive polymer capacitors all add up
to ensure longer component life and lower power loss - creating more energy

efciency.

ASUS Power Saving Solution

ASUS Power Saving solution intelligently and automatically provides balanced
computing power and energy consumption.

ASUS New EPU

"The World's Only Intelligent Power Saving Processor

The new EPU - ASUS' hardware-based energy saving processing unit for
the PC, intelligently detects CPU and Graphics card loadings; and optimizes

the energy providing system in real-time. With auto phase switching, the

new EPU saves up to 80.23% CPU power, enhances power efciency by
up to 96%, and is the world's rst energy-saving solution that can adjust
both CPU and VGA voltages. The new EPU's user-friendly UI AI Gear 4,

also intelligently monitors the PC system status and displays the total power
saved in full detail."

ASUS 3rd Generation 8 Phase Power Design

Longer Life, & Higher Efciency!

With power efciency so important to operating temperatures, ASUS' 3rd

generation 8-phase VRM design leads the industry with its 96% power

efciency. High quality power components such as low RDS (on) MOSFETs

for minimum switching loss & lower temperatures, Ferrite core chokes with
lower hysteresis loss, and high quality Japanese-made conductive polymer
capacitors all add up to ensure longer component life and lower power loss

- creating more energy efciency.

1-4 Chapter 1: Product Introduction

AI Nap

With AI Nap, the system can continue running at minimum power and noise
when you are temporarily away. To wake the system and return to the OS
environment, simply click the mouse or press a key.

ASUS Quiet Thermal Solution

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

Fanless Design - Stylish Heatsink Design

The wing-shaped heatsink features 0-dB thermal solution that offers users

a noiseless PC environment. Not only the beautifully curved ns upgrade

the visual enjoyment for motherboard users, but also the special thickened

bottom design effectively cools down hot airows generated by the north

bridge chipset. Combined with usability and aesthetics, the ASUS Patent
Wing Heat-sink will give users an extremely silent and cooling experience

with the elegant appearance!

DO NOT uninstall the heatsink by yourself. Doing so may affect the heat
dissipation performance.

Fan Xpert

ASUS Fan Xpert intelligently allows users to adjust both the CPU and chassis
fan speed according to different ambient temperature, which is caused
by different climate conditions in different geographic regions and system

loading. Built-in variety of useful proles offer exible controls of fan speed to

achieve a quiet and cool environment.

ASUS Crystal Sound

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

ASUS AI Audio 2

AI Audio 2 creates a virtual center channel that expands the overall sound

eld without introducing a picket fencing effect. Preserving the dialogue or

solo performances with downmixing from multichannels will allow you to
experience true-to-life high quality audio.

ASUS P5QC

1-5

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.

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 Drive Xpert

Without drivers or BIOS setups, the ASUS exclusive Drive Xpert is ideal for
anyone who needs to secure data on their hard drives or enhance hard drive

performances without the hassles of complicated congurations. With Drive
Xpert’s user-friendly graphical user interface, users can easily arrange hard

drive backups or enhance their hard drive transfer rates - making sure that
data is looked after every moment, every day.

ASUS AI Direct Link

AI Direct Link can easily and efciently transfer large amounts of data via

the network cable - saving up to 70% of the total time taken. With AI Direct

Link, it becomes easy to backup or share large data les like movies or other

media content.

ASUS Q-Shield

The specially designed ASUS Q-Shield does without the usual “ngers”

-- making it convenient and easy to install. With better electric conductivity,
it ideally protects your motherboard against static electricity and shields it
against Electronic Magnetic Interference (EMI).

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.

1-6 Chapter 1: Product Introduction

ASUS O.C. Prole

The motherboard features the ASUS O.C. Prole that allows users to

conveniently store or load multiple BIOS settings. The BIOS settings can be

stored in the CMOS or a separate le, giving users freedom to share and

distribute their favorite settings.

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.

ASUS MyLogo 2™

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.

1.3.3 ASUS Intelligent Performance and Overclocking features

AI Booster

The ASUS AI Booster allows you to overclock the CPU speed in Windows
environment without the hassle of booting the BIOS.

Precision Tweaker 2

Allows the user to adjust the NB Voltage, FSB termination Voltage, CPU PLL

Voltage and the DRAM Voltage in 0.02v steps to netune voltages to achieve the
most precise setting for the ultimate customized overclocking conguration.

C.P.R. (CPU Parameter Recall)

The C.P.R. feature of the motherboard BIOS allows automatic re-setting to the
BIOS default settings in case the system hangs due to overclocking. When the
system hangs due to overclocking, C.P.R. eliminates the need to open the system
chassis and clear the RTC data. Simply shut down and reboot the system, and the
BIOS automatically restores the CPU default setting for each parameter.

ASUS P5QC

1-7

1-8 Chapter 1: Product Introduction

This chapter 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.

information

Hardware

2

Chapter summary

2

2.1 Before you proceed ..................................................................... 2-1

2.2 Motherboard overview ................................................................. 2-2

2.3 Central Processing Unit (CPU) ................................................... 2-5

2.4 System memory ......................................................................... 2-11

2.5 Expansion slots .......................................................................... 2-18

2.6 Jumpers ...................................................................................... 2-21

2.7 Connectors ................................................................................. 2-24

2.8 Starting up for the rst time ...................................................... 2-39

2.9 Turning off the computer ........................................................... 2-40

ASUS P5QC

2.1 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. The green LED 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.

ASUS P5QC 2-1

2.2 Motherboard overview

2.2.1 Motherboard layout

Refer to

2.7 Connectors

internal connectors.

2-2 Chapter 2: Hardware information

for more information about rear panel connectors and

2.2.2 Layout contents

Connectors/Jumpers/Slots Page

1. Keyboard power (3-pin USBPW1-4, USBPW7-10, USBPW1112) 2-22

2. Keyboard power (3-pin PS2_USBPW56) 2-22

3. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V) 2-35

4. LGA775 CPU Socket 2-6

5. CPU / Northbridge overvoltage setting (3-pin OV_CPU; 3-pin
OV_NB)

6. DDR2/DDR3 DIMM slots 2-11

7. CPU, chassis, and power fan connectors (4-pin CPU_FAN;
3-pin CHA_FAN1-2; 3-pin PWR_FAN)

8. IDE connector (40-1 pin PRI_EIDE) 2-27

9. ICH10R Serial ATA connectors [red] (7-pin SATA1-6) 2-28

10. Clear RTC RAM (3-pin CLRTC) 2-21

11. SIL5723 Serial ATA connectors

(7-pin SATA_E1 [orange, port 0]; SATA_E2 [white, port 1])

12. Chassis intrusion connector (4-1 pin CHASSIS) 2-33

13. System panel connector (20-8 pin PANEL) 2-37

14. TPM connector (20-1 pin TPM)

15. Onboard LED (SB_PWR) 2-1

16. USB connectors (10-1 pin USB78, USB910, USB1112) 2-30

17. IEEE 1394a port connector (10-1 pin IE1394_2) 2-31

18. Serial port connector (10-1 pin COM1) 2-33

19. Floppy disk drive connector (34-1 pin FLOPPY) 2-26

20. Optical drive audio connector (4-pin CD) 2-36

21. Front panel audio connector (10-1 pin AAFP) 2-34

22. Digital audio connector (4-1 pin SPDIF_OUT) 2-36

2-23

2-32

2-29

ASUS P5QC 2-3

2.2.3 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.

2.2.4 Screw holes

Place nine (9) screws into the holes indicated by circles to secure the motherboard
to the chassis.

DO NOT overtighten the screws! Doing so can damage the motherboard.

Place this side towards

the rear of the chassis

2-4 Chapter 2: Hardware information

2.3 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
/ CeleronCeleron® dual-core / CeleronCeleron® Processors.

• Make sure that all power cables are unplugged before installing the CPU.

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

• Due to the chipset limitation, we recommend you use FSB 800MHz CPU or

above.

• 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.

ASUS P5QC 2-5

2.3.1 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.

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

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

3. Lift the load lever in the direction of
the arrow to a 135º angle.

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).

Retention tab

A

B

Load lever

PnP cap

Load plate

4B

4A

3

2-6 Chapter 2: Hardware information

5. Position the CPU over the socket,
making sure 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!

6. Apply several drops of thermal paste
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.

Some heatsinks come with pre­applied thermal paste. If so, skip
this step.

CPU notch

Gold
triangle
mark

Alignment key

The Thermal Interface Material is toxic and inedible. If it gets into your eyes
or touches your skin, ensure to wash it off immediately, and seek professional
medical help.

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

directly.

ASUS P5QC 2-7

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 Hyper-Threading Technology. Refer to the Appendix for more
information on these CPU features.

A

B

2-8 Chapter 2: Hardware information

2.3.2 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.

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

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

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

B

B

A

Orient the heatsink and fan assembly such that the CPU fan cable is closest to
the CPU fan connector.

A

B

B

A

1

1

ASUS P5QC 2-9

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.

2.3.3 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.

B

A

B

3. Pull up two fasteners at a time in a
diagonal sequence to disengage the

A

heatsink and fan assembly from the
motherboard.

A

B

B

A

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

2-10 Chapter 2: Hardware information

2.4 System memory

2.4.1 Overview

The motherboard comes with two Double Data Rate 3 (DDR3) and four Double
Data Rate 2 (DDR2) Dual Inline Memory Modules (DIMM) sockets.

A DDR3 module has the same physical dimensions as a DDR2/DDR DIMM but
is notched differently to prevent installation on a DDR2/DDR DIMM socket, while
a DDR3/DDR2 module has a 240-pin footprint compared to the 184-pin DDR
DIMM. DDR3 modules are developed for better performance with less power

consumption. The gure illustrates the location of the DDR3/DDR2 DIMM sockets:

DDR3 module installation

Channel Sockets

Channel A DDR3_DIMM_A1

Channel B DDR3_DIMM_B1

DDR2 module installation

Channel Sockets

Channel A DIMM_A1 and DIMM_A2

Channel B DIMM_B1 and DIMM_B2

• You can only install either DDR2 module(s) or DDR3 module(s) on the

motherboard; otherwise, the system will not boot up.

• DDR2 1066MHz DIMMs work only on the black slots for one DIMM per
channel. Ensure to install the DDR2 1066MHz DIMMs ONLY on the BLACK
slots!

ASUS P5QC 2-11

2.4.2 Memory congurations

You may install 512 MB, 1 GB, 2 GB and 4GB unbuffered and non-ECC DDR2
DIMMs or 1 GB, 2 GB and 4GB unbuffered and non-ECC DDR3 DIMMs into the
DIMM sockets.

• 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.

• For DDR2, it is recommended to install the memory modules from the black
slots for better overclocking capability. For DDR3, only install the memory
modules in the orange slots.

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

• This motherboard does not support memory modules made up of 128 Mb
chips.

For DDR2 DIMMs:

• If you install two 2 GB or four 1 GB memory modules, the system may

only recognize less than 3 GB because the address space is reserved for

other critical functions. This limitation appears on Windows® XP/Vista 32-bit
operation system which does not support Physical Address Extension (PAE).

• If you install Windows® XP/Vista 32-bit operation system, a total memory of
less than 3GB is recommended.

• 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.

64-bit

• The default memory operation frequency is dependent on its SPD. Under

• The memory modules may require a better cooling system to work stably

2-12 Chapter 2: Hardware information

Windows® XP Professional x64 Edition

the default state, some memory modules for overclocking may operate at a
lower frequency than the vendor-marked value. To operate at the vendor­marked or at a higher frequency, see section
manual memory frequency adjustment.

under full loading (4 DIMMs) or overclocking setting.

Windows

®

Vista x64 Edition

3.4 Ai Tweaker menu

for

For DDR3 DIMMs:

• If you install one 4 GB or two 2 GB memory modules, the system may
detect less than 4 GB of total memory because of address space allocation
for other critical functions. This limitation applies to Windows Vista 32-bit/
Windows XP 32-bit version operating system since it does not support PAE
(Physical Address Extention) mode.

• If you install Windows Vista 32-bit/Windows XP 32-bit version operating
system, we recommend that you install less than 3GB of total memory.

P5QC Motherboard Qualied Vendors Lists (QVL)
DDR3-1333MHz capability

DIMM socket

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

1024MB CORSAIR Heat-Sink Package N/A DS CM3X1024-1333C9DHX • •

1024MB KINGMAX J1108BASE-DJ-E ELPIDA SS FLFD45F-B8EE9 • •

1024MB MICRON Z9HWR MICRON SS MT8JTF12864AY-

1024MB OCZ Heat-Sink Package N/A SS OCZ3RPX1333EB2GK •

1024MB Qimonda IDSH1G-03A1F1C-13H N/A SS IMSH1GU03A1F1C-13H • •

2048MB Qimonda IDSH1G-03A1F1C-13H N/A DS IMSH2GU13A1F1C-13H • •

1024MB SAMSUNG K4B1G0846D SAMSUNG SS M378B2873DZ1-CH9 • •

1024MB SAMSUNG K4B1G0846D(ECC) SAMSUNG SS M391B2873DZ1-CH9 • •

2048MB SAMSUNG K4B1G0846D SAMSUNG DS M378B5673DZ1-CH9 • •

2048MB SAMSUNG K4B1G0846D(ECC) SAMSUNG DS M391B5673DZ1-CH9 • •

1024MB (Kit of 2) Patriot Heat-Sink Package Patriot SS PDC32G1333LLK •

1G4BYES

support
(Optional)

A* B*

• •

P5QC Motherboard Qualied Vendors Lists (QVL)
DDR3-1066MHz capability

DIMM socket

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

1024MB A-DATA J5308BASE-AE-E-S ELPIDA DS M3OEL3G3I4130A1B5Z • •

1024MB CORSAIR Heat-Sink Package N/A DS CM3X1024-1066C7 • •

1024MB Crucial Z9HWQ MICRON SS CT12864BA1067.8SFB • •

1024MB ELPIDA J5308BASE-AC-E ELPIDA DS EBJ11UD8BAFA-AG-E • •

1024MB Hynix H5TQ1G83AFPG7C HYNIX SS HMT112U6AFP8C-G7N0 • •

1024MB Hynix HY5TQ1G831ZNFP-G7 HYNIX SS HYMT112U64ZNF8-G7 • •

2048MB Hynix H5TQ1G83AFPG7C HYNIX DS HMT125U6AFP8C-G7N0 • •

1024MB Kingston J5308BASE-AC-E ELPIDA DS KVR1066D3N7/1G • •

2048MB Kingston K4B1G0846C-ZCF8 N/A DS KVR1066D3N7/2G • •

1024MB MICRON 7VD22 MICRON SS MT8JTF12864AY-1G1D1 • •

2048MB MICRON 7VD22 MICRON DS MT16JTF25664AY-1G1D1 • •

1024MB Qimonda IDSH1G-03A1F1C-10F QIMONDA SS IMSH1GU03A1F1C-10F • •

1024MB Qimonda IDSH1G-03A1F1C-10G QIMONDA SS IMSH1GU03A1F1C-10G • •

1024MB Qimonda IDSH51-03A1F1C-10F QIMONDA DS IMSH1GU13A1F1C-10F • •

2048MB Qimonda IDSH1G-03A1F1C-10F QIMONDA DS IMSH2GU13A1F1C-10F • •

2048MB Qimonda IDSH1G-03A1F1C-10G QIMONDA DS IMSH2GU13A1F1C-10G • •

1024MB WINTEC IDSH51-03A1F1C-10F QIMONDA DS 3DU3191A-10 • •

(continued on the next page)

support
(Optional)

A* B*

ASUS P5QC 2-13

Side(s): SS - Single-sided DS - Double-sided
DIMM support:

• A*: Supports one module inserted into either slot as Single-channel

memory conguration.

• B*: Supports two modules inserted into both the orange slots Dual-channel

memory conguration.

Visit the ASUS website for the latest QVL.

P5QC Motherboard Qualied Vendors Lists (QVL)
DDR2-1066MHz capability

DIMM socket support

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

1024MB Qimonda HYB18T 512800CF19 Qimonda DS HYS64T128020EU-1.9-C •

1024MB Qimonda HYB18T 512800CF19F N/A DS HYS64T128020EU-19F-C •

(Optional)

A* B* C*

P5QC Motherboard Qualied Vendors Lists (QVL)
DDR2-800MHz capability

DIMM socket support

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

512MB A-DATA AD29608A8A-25EG N/A DS M2OAD6G3H3160G1E53 • • •

1024MB A-DATA AD26908A8A-25EG N/A DS M2OAD6G3I4170I1E58 • • •

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

1024MB Apacer AM4B5808CQJS8E APACER DS 78.01GA0.9K5 • • •

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

2048MB Apacer AM4B5808CQJS8E APACER SS 78.A1GA0.9K4 • • •

4096MB(Kit of 2) CORSAIR Heat-Sink Package N/A DS Box P/N:TWIN2X4096-6400C5

4096MB(Kit of 2) CORSAIR Heat-Sink Package N/A DS BoxP/N:TWIN2X4096-

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

2048MB GEIL Heat-Sink Package N/A SS GE24GB800C4DC • • •

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

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

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

(CM2X2048-6400C5)

6400C4DHX
(CM2X2048-6400C4DHX)

(continued on the next page)

(Optional)

A* B* C*

• • •

• • •

2-14 Chapter 2: Hardware information

P5QC Motherboard Qualied Vendors Lists (QVL)
DDR2-800MHz capability

DIMM socket support

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

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

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

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

512MB Hynix HY5PS12821CFP-S5 Hynix DS HYMP564U64CP8-S5 • • •

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

512MB KINGMAX KKA8FEIBF-HJK-25A KINGMAX DS KLDC28F-A8KI5 • • •

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

1024MB(Kit of 2) KINGSTON Heat-Sink Package N/A SS KHX6400D2LLK2/1GN(EPP) • •

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

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

1024MB

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

2048MB KINGSTON E1108ACBG-8E-E ELPIDA DS KVR800D2N5/2G • • •

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

512MB

1024MB NANYA NT5TU64M8CE-25D NANYA DS NT1GT64U8HCOBY-25D • • •

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

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

2048MB(Kit of 2) OCZ Heat-Sink Package N/A DS OCZ2P800R22GK • • •

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

2048MB PSC A3R1GE3CFF734MAA0E PSC DS AL8E8F73C-8E1 • • •

2048MB Qimonda HYB18T1G800C2F-2.5 QIMONDA DS HYS64T256020EU-2.5-C2 • •

2048MB Qimonda HYB18T1G800C2F-25F QIMONDA DS HYS64T256020EU-25F-C2 • • •

1024MB SAMSUNG K4T1G084QQ SAMSUNG SS M378T2863QZS-CF7 • • •

512MB SAMSUNG K4T51083QG SAMSUNG SS M378T6553GZS-CF7 • • •

1024MB SAMSUNG K4T1G084QQ(ECC) SAMSUNG SS M391T2863QZ3-CF7 • • •

1024MB SAMSUNG K4T51083QG SAMSUNG DS M378T2953GZ3-CF7 • • •

4096MB SAMSUNG K4T2G084QA-HCF7 SAMSUNG DS M378T5263AZ3-CF7 • • •

2048MB SAMSUNG K4T1G084QQ(ECC) SAMSUNG DS M378T5663QZ3-CF7 • • •

2048MB SAMSUNG K4T1G084QQ SAMSUNG DS M391T5663QZ3-CF7 • • •

512MB Super Talent Heat-Sink Package N/A SS T800UA12C4 • • •

1024MB Super Talent Heat-Sink Package N/A DS T800UB1GC4 • •

1024MB Transcend TQ243ECF8 Transcen SS JM800QLU-1G • • •

2048MB Transcend TQ243PCF8 Transcen DS JM800QLU-2G • • •

1024MB Aeneon AET03R25DC Aeneon SS AET760UD00-25DC08X • • •

2048MB Aeneon AET03R25DC Aeneon DS AET860UD00-25DC08X • • •

4096MB Aeneon Heat-Sink Package N/A DS AXT960UD20-25D • • •

1024MB Asint DDRII1208-GE Asint SS SLY2128M8-JGE • • •

2048MB Asint DDRII1208-GE Asint DS SLZ2128M8-JGE • • •

1024MB CENTURY HY5PS12821BFP-S5 Hynix DS 28VOH8 • • •

1024MB Elixir N2TU1G80DE-AC Elixir SS M2Y1G64TU88D4B-AC • • •

1024MB Elixir N2TU 51280BE-25C Elixir DS M2Y1G64TU8HB0B-25C • • •

2048MB Elixir N2TU1G80DE-AC Elixir DS M2Y2G64TU8HD4B-AC • • •

2048MB Kingbox D9HNL N/A DS N/A • • •

1024MB Oci 64M8PC6400 Innity DS 04701G16CZ5D2A • • •

512MB Patriot PM64M8D2BU-25EC N/A SS PSD2 51280081 • •

1024MB Patriot PM64M8D2BU-25PAC Patriot DS PSD21G8002 • • •

2048MB Patriot PM128M8D2BU-25KC Patriot DS PSD22GB002 • • •

2048MB Team Heat-Sink Package N/A DS TEDD2048M800HC5 • •

1024MB UMAX U2S12D30TP-8E UMAX DS D48001GP3-63BJU • • •

2048MB UMAX U2S12D30TP-8E UMAX DS D48002GP0-73BCU • • •

KINGSTON E5108AJBG-8E-E

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

ELPIDA DS

KVR800D2N5/1G

(continued on the next page)

(Optional)

A* B* C*

• •

•

ASUS P5QC 2-15

P5QC Motherboard Qualied Vendors Lists (QVL)
DDR2-667MHz capability

DIMM socket support

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

512MB Asint DDRII6408-6E Asint SS SLX264M8-J6E • • •

1024MB

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

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

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

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

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

Asint DDRII1208-6E

Asint

SS SLY2128M8-J6E

Side(s): SS - Single-sided DS - Double-sided
DIMM support:

• A*: Supports one module inserted into either 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 two pairs of modules inserted into both the yellow slots and

the black slots as two pairs of Dual-channel memory conguration.

Visit the ASUS website for the latest QVL.

(Optional)

A* B* C*

• •

•

2-16 Chapter 2: Hardware information

2.4.3 Installing a DIMM

Make sure to unplug the power supply before adding or removing DIMMs or
other system components. Failure to do so may cause severe damage to both
the motherboard and the components.

1. Unlock a DIMM socket by
pressing the retaining clips
outward.

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

Unlocked retaining clip

• A DDR2/DDR3 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.

• The DDR3 DIMM sockets on this motherboard are orange-colored and do
not support DDR or DDR2 DIMMs. DO NOT install DDR or DDR2 DIMMs
to the DDR3 DIMM sockets.

• The DDR2 DIMM sockets do not support DDR or DDR3 DIMMs. Do not
install DDR or DDR3 DIMMs to the DDR2 DIMM sockets.

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

Locked Retaining Clip

2

DIMM notch

1

1

3

2.4.4 Removing a DIMM DIMMDIMM

Follow these steps to remove a DIMM.

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

Support the DIMM lightly with

your ngers when pressing

the retaining clips. The DIMM
might get damaged when it

ips out with extra force.

1

2. Remove the DIMM from the socket.

ASUS P5QC 2-17

2

1

DIMM notch

2.5 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.

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.

2.5.1 Installing an expansion card expansion cardexpansion 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.

2.5.2 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 3 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.

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.

2-18 Chapter 2: Hardware information

2.5.3 Interrupt assignments

Standard interrupt assignments

IRQ Priority Standard function

0 1 System Timer

1 2 Keyboard Controller

2 – Redirect to IRQ#9

4 12 Communications Port (COM1)*

5 13 IRQ Holder for PCI Steering*

6 14 Floppy Disk Controller

7 15 Reserved

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 Reserved

13 8 Numeric Data Processor

14 9 Primary IDE Channel

* These IRQs are usually available for PCI devices.

IRQ assignments for this motherboard

A B C D E F G H

PCIE1_1 – – shared – – – – –
PCIE1_2 – – – shared – – – –
PCIE1_3
PCIE16_1 shared – – – – – – –
LAN (8056) – shared – – – – – –
LAN (8001) – – shared – – – – –
Marvell 6121 shared – – – – – – –
PCI_1 shared – – – – – – –
PCI_2 – shared – – – – – –
USB controller 1 – – – – – – – shared
USB controller 2 – – – shared – – – –
USB controller 3 – – shared – – – – –
USB controller 4 shared – – – – – – –
USB controller 5 shared – – – – – – –
USB controller 6 – – – – – shared – –
USB 2.0 controller 1 – – – – – – – shared
USB 2.0 controller 2 – – shared – – – – –
SATA controller 1 – – shared – – – – –
SATA controller 2 – – – shared – – – –
Audio Azalia – – – – – – shared –

ASUS P5QC 2-19

2.5.4 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. Refer to the gure below for the location

of the slot.

2.5.5 PCI Express x1 slots

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

cards that comply with the PCI Express specications. Refer to the gure below for

the location of the slot.

2.5.6 PCI Express 2.0 x16 slot

This motherboard has one PCI Express 2.0 x16 slot that supports a PCI Express

x16 2.0 graphic card complying with the PCI Express specications. Refer to the
gure below for the location of the slot.

PCI2 slot

PCI1 slot

PCIe x1_3 slot

PCIe x1_2 slot

PCIe 2.0 x16_1 slot (blue)

PCIe x1_1 slot

2-20 Chapter 2: Hardware information

2.6 Jumpers

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.

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 re-enter data.

Except when clearing the RTC RAM, never remove the cap on CLRTC jumper

default position. Removing the cap will cause system boot failure!

• 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.

ASUS P5QC 2-21

2. Keyboard power (3-pin PS2_USBPW56)

This jumper allows you to enable or disable the keyboard and USB port 5-6

wake-up feature. When you set this jumper to pins 2-3 (+5VSB), you can
wake up the computer by pressing a key on the keyboard (the default is
the Space Bar) or using a USB device. This feature requires an ATX power
supply that can supply at least 1A on the +5VSB lead, and a corresponding
setting in the BIOS. The USBPW56 jumper is for the internal USB connectors
that you can connect to additional USB ports.

3. USB device wake-up (3-pin USBPW1-4, USB7-10, USB1112)

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 USBPW1-4 jumper is for the rear USB ports. The USBPW7-10 and
USBPW1112 jumpers are for the internal USB connectors that you can
connect to additional USB ports.

• 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.

2-22 Chapter 2: Hardware information

4. CPU / Northbridge overvoltage setting (3-pin OV_CPU; 3-pin OV_NB)

These jumpers allow you to enable or disable the advanced CPU and
Northbridge overvoltage settings in BIOS. Read the following information
before you change the jumper settings. Set to pins 1-2 to activate the
advanced CPU / Northbridge overvoltage feature.

OV_CPU OV_NB

Pins 2-3 (Default) up to 1.70V up to 1.76V

Pins 1-2 (OV Enabled) up to 2.10V up to 2.20V

• Before you change the jumper settings for extra-high overvoltage ability,
use the BIOS items introduced in
CPU and Northbridge performance. Make sure your system function well
under the highest BIOS voltage settings before you change the setting of
these two jumpers.

• Refer to

• DO NOT set the OV_CPU jumper to pins 1-2 when you install a new CPU

• The system may need a better cooling system (for example, a water-cooling

3.4 Ai Tweaker

overvoltage settings.

and have not booted for the rst time. Doing so may cause the system to

halt. For system failure due to the wrong setting of the OV_CPU jumper,
shut down the computer and move the cap back to pins 2-3.

system) to work stably under high voltage settings.

for more information about CPU and Northbridge

3.4 Ai Tweaker

rst to adjust the desired

ASUS P5QC 2-23

2.7 Connectors

2.7.1 Rear panel connectors

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

2. IEEE 1394a port. This 6-pin IEEE 1394a port provides high-speed

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

3. LAN 1 (RJ-45) port*. Supported by Marvell® 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.

*To compliant with Energy Star 4.0, this port does not support WOL

(Wake on LAN) function.

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

ACT/LINK

LED

LAN port

SPEED

LED

4. Center/Subwoofer port (orange).

This port connects the center/subwoofer

speakers.

5. Rear Speaker Out port (black).

This port connects the rear speakers in a

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

6. Line In port (light blue).

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

other audio sources.

7. 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.

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

9. Side Speaker Out port (gray). This port connects the side speakers in an

8-channel audio conguration.

2-24 Chapter 2: Hardware information

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

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

available for connecting USB 2.0 devices.

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

available for connecting USB 2.0 devices.

12. Coaxial S/PDIF Out port. This port connects an external audio output device

via a coaxial S/PDIF cable.

13. USB 2.0 ports 5 and 6. These 4-pin Universal Serial Bus (USB) ports are

available for connecting USB 2.0 devices.

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

4-channel 6-channel 8-channel

ASUS P5QC 2-25

2.7.2 Internal connectors

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

This connector is for the provided 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.

2. TPM connector (20-1 pin TPM) [Optional]

This connector supports a Trusted Platform Module (TPM) system, which can

securely store keys, digital certicates, passwords, and data. A TPM system

also helps enhance network security, protects digital identities, and ensures
platform integrity.

The TPM module is purchased separately.

2-26 Chapter 2: Hardware information

3. IDE connector (40-1 pin PRI_EIDE)

The onboard IDE connector is for the Ultra DMA 133/100 signal cable. There
are three connectors on each Ultra DMA 133/100 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.

Drive jumper setting Mode of

device(s)

Single device Cable-Select or Master - Black

Two devices Cable-Select Master

Slave Gray

Master Master Black or gray

Slave Slave

• 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 IDE devices.

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

Cable connector

Black

ASUS P5QC 2-27

4. ICH10R Serial ATA connectors [red] (7-pin SATA1-6)

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

If you installed Serial ATA hard disk drives, you can create a RAID 0, 1, 5,

and 10 conguration with the Intel® Matrix Storage Technology through the

onboard Intel® ICH10R RAID controller.

•

These connectors are set to Standard IDE mode by default. In Standard
IDE mode, you can connect Serial ATA boot/data hard disk drives to these
connectors. If you intend to create a Serial ATA RAID set using these
connectors, set the Congure SATA as item in the BIOS to [RAID]. See
section 3.3.6 Storage Conguration for details.

• Before creating a RAID set, refer to section 4.4.3 Intel RAID

congurations or the manual bundled in the motherboard support DVD.

•

You must install the Windows® XP Service Pack 1 before using Serial ATA
hard disk drives. The Serial ATA RAID feature (RAID 0, 1, 5, and 10) is
available only if you are using Windows® XP or later version.

•

When using hot-plug and NCQ, set the Congure SATA as in the BIOS to
[AHCI]. See section 3.3.6 Storage Conguration for details.

right angle side

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.

2-28 Chapter 2: Hardware information

5. Silicon Image® Sil5723 Serial ATA connectors
(7-pin SATA_E1 [orange]; SATA_E2 [white])

These connectors are for the Serial ATA signal cables for Serial ATA hard
disk drives. If you installed Serial ATA hard disk drives, you can create a EZ

Backup or a Super Speed conguration with the Drive Xpert Technology

through the onboard Silicon Image® SIL5723 controller.

• The SATA_E1 (orange) and SATA_E2 (white) ports are for SATA hard
drives only. ATAPI device is not supported.

• Make necessary backup before using the Drive Xpert function:
All original data of the SATA_E2 (white) hard drive will be erased for EZ
Backup setup.
All original data of the two hard drives will be erased for Super Speed
setup.

Before using the Drive Xpert technology, make sure that you have connected
the SATA signal cables and installed SATA hard disk drives.

Refer to 4.3.11 ASUS Drive Xpert for detailed application instructions.

ASUS P5QC 2-29

6. USB connectors (10-1 pin 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!

If your chassis supports front panel USB ports, you can attach a front panel
USB cable to these connectors. Connect the USB cable to ASUS Q-Connector

(USB, blue) rst, and then install the Q-Connector (USB) to the USB connector

onboard.

2-30 Chapter 2: Hardware information

7. 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.

Never connect a USB cable to the IEEE 1394a connector. Doing so will damage

the motherboard!

ASUS P5QC 2-31

8 CPU, chassis and power fan connectors

(4-pin CPU_FAN, 3-pin CHA_FAN1-2, 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!

Only the CPU-FAN and CHA-FAN 1-2 connectors support the ASUS Q-Fan
feature.

2-32 Chapter 2: Hardware information

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

This connector is for a chassis-mounted intrusion detection sensor or switch.
Connect one end of the chassis intrusion sensor or switch cable to this
connector. 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.

10. Serial port connector (10-1 pin COM1)

This connector is for a serial (COM) port. Connect the serial port module
cable to this connector, then install the module to a slot opening at the back
of the system chassis.

ASUS P5QC 2-33

11. 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.

• If you want to connect a high-denition front panel audio module to this

connector, make sure that the Front Panel Type item in the BIOS is set

to [HD Audio]. If you want to connect an AC' 97 front panel audio module

to this connector, set the item to [AC97]. Refer to

Conguration

for details.

3.5.3 Onboard Device

2-34 Chapter 2: Hardware information

12. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)

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.

• 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 8-pin EATX12V 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.

• If you are uncertain about the minimum power supply requirement for your
system, refer to the Recommended Power Supply Wattage Calculator
at http://support.asus.com/PowerSupplyCalculator/PSCalculator.
aspx?SLanguage=en-us for details.

ASUS P5QC 2-35

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

This connector allows you to receive stereo audio input from sound sources
such as a CD-ROM, TV tuner, or MPEG card.

14. Digital audio connector (4-1 pin SPDIF)

This connector is for an additional Sony/Philips Digital Interface (S/PDIF)
port(s).

The S/PDIF out cable is purchased separately.

2-36 Chapter 2: Hardware information

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

This connector supports several chassis-mounted functions.

• 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.

ASUS P5QC 2-37

16. 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 instructions below 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, then

match them to the respective front panel
cable labels.

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.

2-38 Chapter 2: Hardware information

2.8 Starting up for the rst time

1. After making all the connections, replace the system case cover.

2. Be sure that all switches are off.

3. Connect the power cord to the power connector at the back of the system
chassis.

4. Connect the power cord to a power outlet that is equipped with a surge
protector.

5. Turn on the devices in the following order:

a. Monitor

b. External SCSI devices (starting with the last device on the chain)

c. System power

6. After applying power, the system power LED on the system front panel case
lights up. For systems with ATX power supplies, the system LED lights up
when you press the ATX power button. If your monitor complies with “green”
standards or if it has a “power standby” feature, the monitor LED may light up
or switch between orange and green after the system LED turns on.

The system then runs the power-on self tests or POST. While the tests are

running, the BIOS beeps (see BIOS beep codes table below) or additional
messages appear on the screen. If you do not see anything within 30
seconds from the time you turned on the power, the system may have failed a
power-on test. Check the jumper settings and connections or call your retailer
for assistance.

BIOS Beep Description

One short beep

One continuous beep followed by two
short beeps then a pause (repeated)
One continuous beep followed by three
short beeps

One continuous beep followed by four
short beeps

VGA detected
Quick boot set to disabled
No keyboard detected

No memory detected

No VGA detected

Hardware component failure

7. At power on, hold down the <Delete> key to enter the BIOS Setup. Follow the
instructions in Chapter 3.

ASUS P5QC 2-39

2.9 Turning off the computer

2.9.1 Using the OS shut down function

If you are using Windows® XP:

1. Click the Start button then select Turn Off Computer.

2. Click the Turn Off button to shut down the computer.

3. The power supply should turn off after Windows® shuts down.

If you are using Windows® Vista:

1. Click the Start button then select ShutDown.

2. The power supply should turn off after Windows® shuts down.

2.9.2 Using the dual function power switch

While the system is ON, pressing the power switch for less than four seconds puts
the system to sleep mode or to soft-off mode, depending on the BIOS setting.
Pressing the power switch for more than four seconds lets the system enter the
soft-off mode regardless of the BIOS setting. Refer to section 3.6 Power Menu in
Chapter 3 for details.

2-40 Chapter 2: Hardware information

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

BIOS setup

3

Chapter summary

3

3.1 Managing and updating your BIOS ............................................ 3-1

3.2 BIOS setup program .................................................................... 3-7

3.3 Main menu .................................................................................. 3-10

3.4 Ai Tweaker .................................................................................. 3-15

3.5 Advanced menu ......................................................................... 3-22

3.6 Power menu ................................................................................ 3-28

3.7 Boot menu .................................................................................. 3-32

3.8 Tools menu ................................................................................. 3-36

3.9 Exit menu .................................................................................... 3-41

ASUS P5QC

3.1 Managing and updating your BIOS

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

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

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

3. ASUS AFUDOS (Updates the BIOS using a bootable oppy disk)

Refer to the corresponding sections for details on these utilities.

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

3.1.1 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 VX.XX.XX.

3. The ASUS Update utility is copied to your system.

ASUS P5QC

3-1

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.

2. Select Update BIOS from the

Internet option from the drop-down
menu, then click Next.

3-2 Chapter 3: BIOS setup

3. Select the ASUS FTP site nearest

you to avoid network trafc, or

click Auto Select. 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.

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.

ASUS P5QC

P5QC.ROM

P5QC

3-3

3.1.2 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 Power-On Self Tests (POST).

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.

(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.

ASUSTek EZ Flash 2 BIOS ROM Utility V3.25

FLASH TYPE: WXIC 25L8005

Current ROM

BOARD: P5QC
VER: 0405
DATE: 05/20/2008

PATH: A:\

A:

Update ROM

BOARD: Unknown
VER: Unknown
DATE: Unknown

Note

[Enter] Select or Load [Tab] Switch [V] Drive Info
[Up/Down/Home/End] Move [B] Backup [Esc] Exit

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

and press <Enter> to enable it.

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

is found. Then press <Enter>.

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

process and automatically reboots the system when done.

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

with FAT 32/16 format and single partition only.

• DO NOT shut down or reset the system while updating the BIOS to prevent

system boot failure!

3-4 Chapter 3: BIOS setup

3.1.3 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

• 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.

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

Main lename Extension name

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 V2.07(03.11.24BB))

Copyright (C) 2002 American Megatrends, Inc. All rights reserved.

Reading ash ..... done

Write to le...... ok

A:\>

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

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.

ASUS P5QC

3-5

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

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 /iP5QC.ROM

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

A:\>afudos /iP5QD.ROM

AMI Firmware Update Utility - Version 1.19(ASUS V2.07(03.11.24BB))

Copyright (C) 2002 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%)

DO NOT shut down or reset the system while updating the BIOS to prevent

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 /iP5QC.ROM

AMI Firmware Update Utility - Version 1.19(ASUS V2.07(03.11.24BB))

Copyright (C) 2002 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:\>

3-6 Chapter 3: BIOS setup

3.2 BIOS setup program

This motherboard supports a programmable rmware chip that you can update

using the provided utility described in section 3.1 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 rmware 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, restart the system by pressing
<Ctrl+Alt+Delete>, or by pressing the reset button on the system chassis. You can
also restart by turning the system off and then back on. Do this last option only if

the rst two failed.

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.

ASUS P5QC

• 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 3.9 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.

3-7

3.2.1 BIOS menu screen

Menu bar

Main Ai Tweaker Advanced Power Boot Tools Exit

System Time [11:55:25]
System Date [Tue 05/20/2008]
Legacy Diskette A [1.44M, 3.5 in.]
Language [English]

SATA1 [Not Detected]
SATA2 [Not Detected]
SATA3 [Not Detected]
SATA4 [Not Detected]
SATA5 [Not Detected]
SATA6 [Not Detected]

Storage Conguration
System InformationSystem Information

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

Sub-menu items

Conguration eldsMenu items

BIOS SETUP UTILITY

General help

Use [ENTER], [TAB]
or [SHIFT-TAB] to

select a eld.

Use [+] or [-]

to congure the

System Time.

Select Screen

Select Item

+- Change Field

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

Navigation keys

3.2.2 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 the overclocking 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

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

3.2.3 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.

The navigation keys may differ from one screen to another.

3-8 Chapter 3: BIOS setup

3.2.4 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, and Exit) on the menu bar have
their respective menu items.

System Time [11:56:54]
System Date [Tue 05/20/2008]
Floppy Diskette A [1.44M, 3.5 in.]
Language [English]

SATA1 [Not Detected]
SATA2 [Not Detected]
SATA3 [Not Detected]
SATA4 [Not Detected]
SATA5 [Not Detected]
SATA6 [Not Detected]

Storage Conguration
System Information

Use [ENTER], [TAB], or
[SHIFT-TAB] to select

a eld.

Use [+] or [-] to

congure system Time.

3.2.5 Sub-menu items

Main 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>.

3.2.6 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 user-con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 3.2.7 Pop-up window.

3.2.7 Pop-up window

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

conguration options for that item.

3.2.8 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.

Pop-up window

Scroll bar

3.2.9 General help

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

ASUS P5QC

3-9

3.3 Main menu

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

Refer to section 3.2.1 BIOS menu screen for information on the menu screen
items and how to navigate through them.

Main Ai Tweaker Advanced Power Boot Tools Exit

System Time [11:55:25]
System Date [Tue 05/20/2008]
Legacy Diskette A [1.44M, 3.5 in.]
Language [English]

SATA1 [Not Detected]
SATA2 [Not Detected]
SATA3 [Not Detected]
SATA4 [Not Detected]
SATA5 [Not Detected]
SATA6 [Not Detected]

Storage Conguration
System InformationSystem Information

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

BIOS SETUP UTILITY

Use [ENTER], [TAB]
or [SHIFT-TAB] to

select a eld.

Use [+] or [-] to

congure System Time.

Select Screen

Select Item

+- Change Field

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

3.3.1 System Time [xx:xx:xx]

Allows you to set the system time.

3.3.2 System Date [Day xx/xx/xxxx]

Allows you to set the system date.

3.3.3 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.]

3.3.4 Language [English]

Allows you to select the display language for the BIOS setup screen.

Conguration options: [Chinese(BIG5)] [Chinese(GB)] [Japanese] [Français]

[German] [English]

3-10 Chapter 3: BIOS setup

3.3.5 SATA 1-6

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

Main

SATA 1

Device : Hard Disk
Vendor : WDC WD800JD-00LSA0
Size : 80.0GB
LBA Mode : Supported
Block Mode : 16Sectors
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]

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

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]

BIOS SETUP UTILITY

Select the type of
device connected to
the system.

Select Screen

Select Item

+- Change Option

F1 General Help
F10 Save and Exit
ESC Exit

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]

Allows you to select the data transfer mode.

Conguration options: [Auto] [0] [1] [2] [3] [4]

ASUS P5QC

3-11

DMA Mode [Auto]

Selects the DMA mode.

Conguration options: [Auto] [SWDMA0] [SWDMA1] [SWDMA2] [MWDMA0]

[MWDMA1] [MWDMA2] [UDMA0] [UDMA1] [UDMA2] [UDMA3] [UDMA4] [UDMA5]

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]

3.3.6 Storage Conguration

The items in this menu allow you to set or change the congurations for the SATA

devices installed in the system. Select an item then press <Enter> if you want to

congure the item.

Main

Storage Conguration

SATA Conguraton [Enhanced]
Congure SATA as [IDE]

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

SATA Conguration [Enhanced]

Conguration options: [Disabled] [Compatible] [Enhanced]

Configure SATA as [IDE]

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

BIOS SETUP UTILITY

Options

Disabled
Compatible
Enhanced

• If you want to use the Serial ATA hard disk drives as Parallel ATA physical
storage devices, keep the default setting [IDE].

• If you want the Serial ATA hard disk drives to use the Advanced Host
Controller Interface (AHCI), set this item to [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].

3-12 Chapter 3: BIOS setup

Hard Disk Write Protect [Disabled]

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

Conguration 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]

3.3.7 AHCI Conguration

This menu is the section for AHCI conguration. It appears only when you set the

item Congure SATA as from the sub-menu of SATA Conguration to [AHCI].

Main

AHCI Settings

AHCI CD/DVD Boot Time out [15]

AHCI Port1 [Not Detected]
AHCI Port2 [Not Detected]
AHCI Port3 [Not Detected]
AHCI Port4 [Not Detected]
AHCI Port5 [Not Detected]
AHCI Port6 [Not Detected]

AHCI CD/DVD Boot Time out [15]

Selects the boot time out value for ACHI CD/DVD devices.
Congifuration options: [0] [5] [10] [15] [20] [25] [30] [35]

AHCI Port1~6 [XXXX]

Displays the status of auto-detection of SATA devices.

Main

AHCI Port1

Device :Not Detected

SATA Port1 [Auto]
SMART Monitoring [Enabled]

BIOS SETUP UTILITY

BIOS SETUP UTILITY

Some SATA CD/DVD in
AHCI mode need to
wait ready longer.

Select the type
of devices connected
to the system.

SATA Port1 [Auto]

Allows you to select the type of device connected to the system.

Conguration options: [Auto] [Not Installed]

SMART Monitoring [Enabled]

Allows you to set the Self-Monitoring, Analysis and Reporting Technology.

Congration options: [Disabled] [Enabled]

ASUS P5QC

3-13

3.3.8 System Information

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

automatically detects the items in this menu.

Main

Bios Information

Version : 0405
Build Date : 05/20/08

Processor

Type : Intel(R) Core(TM)2 Duo CPU @ 3.00GHz
Speed : 3000MHz
Count : 2

System Memory

Usable Size : 1024MB

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

Bios Information

Displays the auto-detected BIOS information.

Processor

Displays the auto-detected CPU specication.

System Memory

Displays the auto-detected system memory.

BIOS SETUP UTILITY

Select Screen

Select Item
F1 General Help
F10 Save and Exit
ESC Exit

3-14 Chapter 3: BIOS setup

3.4 Ai Tweaker menu

The Ai Tweaker menu items allow you to congure overclocking-related items.

Take caution when changing the settings of the Ai Tweaker menu items.

Incorrect eld values can cause the system to malfunction.

The default values of the following items vary depending on the CPU and

Main Ai Tweaker Advanced Power Boot Tools Exit

Congure System Performance Settings

Ai Overclock Tuner [Auto]
CPU Ratio Setting [Auto]
FSB Strap to North Bridge [Auto]
DRAM Frequency [Auto]
DRAM Timing Control [Auto]

1st Information : 6-6-6-15-4-36-6-4

Row Refresh Cycle Time [Auto]

2nd Information : 8-4-8-4-9-4-7
3rd Information : 15-6-1-7-7

DRAM Static Read Control [Auto]
DRAM Dynamic Write Control [Auto]
DRAM Read Training [Auto]
DRAM Write Training [Auto]
MEM. OC Charger [Auto]
Ai Clock Twister [Auto]
Ai Transaction Booster [Auto]

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

BIOS SETUP UTILITY

Manual

Auto

Select Screen

Select Item
Enter Go to Sub Screen
+- Change Option
F1 General Help
F10 Save and Exit
ESC Exit

Scroll down to display the following items:

C/P : A1 A2
LVL : 09 09
********Please key in numbers directly!********

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

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

Load-Line Calibration [Auto]
CPU Spread Spectrum [Auto]
PCIE Spread Spectrum [Auto]

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

Options

3.4.1 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

Auto

ASUS P5QC

Allows you to individually set overclocking parameters.

Loads the optimal settings for the system.

3-15

3.4.2 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]

FSB/CPU External Frequency Synchronization

Front Side Bus

CPU External Frequency

The following two items appear only when you set the Ai Overclock Tuner item
to [Manual].

FSB 1600 FSB 1333 FSB 1066 FSB 800

400 MHz 333 MHz 266 MHz 200 MHz

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. Use the <+> and <-> keys to
adjust the FSB frequency. You can also type 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.

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.

3.4.3 FSB Strap to North Bridge [Auto]

When set to [Auto], the FSB Strap will be adjusted automatically by FSB
Frequency and DRAM Frequency.

Congifuration options: [Auto] [200 MHz] [266 MHz] [333 MHz] [400 MHz]

3.4.4 DRAM Frequency [Auto]

Allows you to set the DDR2/DDR3 operating frequency. The conguration options

vary depending on the DIMMs you install on the motherboard.

(For DDR3 DIMMs) Conguration options: [Auto] [DDR3-533MHz]
[DDR3-639MHz] [DDR3-667MHz] [DDR3-709MHz] [DDR3-800MHz]
[DDR3-852MHz] [DDR3-887MHz] [DDR3-1066MHz]

(For DDR2 DIMMs) Conguration options: [Auto] [DDR2-667MHz]
[DDR2-800MHz] [DDR2-889MHz] [DDR2-1066MHz]

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

Selecting a very high DRAM frequency may cause the system to become

unstable! If this happens, revert to the default setting.

3-16 Chapter 3: BIOS setup

3.4.5 DRAM Timing Control [Auto]

Conguration options: [Auto] [Manual]

• The following sub-items appear only when you set the DRAM Timing
Control item to [Manual].

• The conguration options for some of the following items vary depending

on the DIMMs you install on the motherboard.

1st Information : 6-6-6-15-4-36-6-4

CAS# Latency [ 5 DRAM Clocks]

Conguration options: [3 DRAM Clocks] [4 DRAM Clocks] [5 DRAM Clocks]
[6 DRAM Clocks] [7 DRAM Clocks] – [10 DRAM Clocks] [11 DRAM Clocks]

DRAM RAS# to CAS# Delay [ 5 DRAM Clocks]

Conguration options: [3 DRAM Clocks] [4 DRAM Clocks] – [17 DRAM

Clocks] [18 DRAM Clocks]

DRAM RAS# Precharge Time [ 5 DRAM Clocks]

Conguration options: [3 DRAM Clocks] [4 DRAM Clocks] – [17 DRAM

Clocks] [18 DRAM Clocks]

DRAM RAS# Activate to Precharge Time [15 DRAM Clocks]

Conguration options: [3 DRAM Clocks] [4 DRAM Clocks] – [33 DRAM

Clocks] [34 DRAM Clocks]

RAS# to RAS# Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

Row Refresh Cycle Time [Auto]

Conguration options: [Auto] [30 DRAM Clocks] [36 DRAM Clocks]
[48 DRAM Clocks] [60 DRAM Clocks] [72 DRAM Clocks] [82 DRAM Clocks]
[88 DRAM Clocks] [90 DRAM Clocks] [100 DRAM Clocks] [110 DRAM
Clocks]

Write Recovery Time [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

Read to Precharge Time [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

2nd Information : 8-4-8-4-9-4-7

READ to WRITE Delay(S/D) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

Write to Read Delay(S) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

ASUS P5QC

3-17

WRITE to READ Delay(D) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

READ To READ Delay(S) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

READ To READ Delay(D) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

WRITE To WRITE Delay(S) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

WRITE To WRITE Delay(D) [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

3rd Information : 15-6-1-7-7-

WRITE to PRE Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [31 DRAM Clocks]

READ to PRE Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

PRE to PRE Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [3 DRAM Clocks]

ALL PRE to ACT Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

ALL PRE to REF Delay [Auto]

Conguration options: [Auto] [1 DRAM Clocks] – [15 DRAM Clocks]

3.4.6 DRAM Static Read Control [Auto]

Adjusting this item might enhance DRAM overclocking ability.

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

3.4.7 DRAM Dynamic Write Control [Auto]

Disabling this function may help enhance DRAM overclocking ability.

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

3.4.8 DRAM Read Training [Auto]

Enable this function to optimize the DRAM Read Data Timing. Disabling this

function may help enhance DRAM overclocking ability.

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

3-18 Chapter 3: BIOS setup

3.4.9 DRAM Write Training [Auto]

Enable this function to optimize the DRAM Write Data Timing. Disabling this

function may help enhance DRAM overclocking ability.

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

3.4.10 MEM. OC Charger [Auto]

Enabling this function may help enhance DRAM overclocking ability.

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

3.4.11 Ai Clock Twister [Auto]

Allows you to set the DRAM performance. Set this item to [Light] or [Lighter]
to enhance DRAM compatibility, or [Strong] or [Stronger] to accelerate DRAM
performance.

Conguration options: [Auto] [Lighter] [Light] [Moderate] [Strong] [Stronger]

3.4.12 Ai Transaction Booster [Auto]

Allows you to set the system performance.

Conguration options: [Auto] [Manual]

The following two sub-items appear only when you set the Ai Transaction
Booster item to [Manual].

Common Performance Level [05]

Set this item to a higher level for better compatibility or a lower level for better
performance. Use the <+> and <-> keys to adjust the value. The values
range from 1 to 31.

Pull-In of CHA/B PH1/2 [Disabled]

Set this item to [Enabled] to apply enhancement on DRAM Channel A and B,
Phase 1 to 2. The number of phases is determined by DRAM frequency and
FSB strap.

Conguration options: [Disabled] [Enabled]

The following ten (10) items are adjusted by typing the desired values using
the numeric keypad and press the <Enter> key. You can also use the <+> and
<-> keys to adjust the value. To restore the default setting, type [auto] using the
keyboard and press the <Enter> key.

3.4.13 CPU Voltage [Auto]

Allows you to set the CPU VCore voltage. The values range from 0.85000V to

2.10000V* with a 0.00625V interval.

ASUS P5QC

3-19

• 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.

• The value [2.10000V] of the CPU Voltage item is supported only if the
OV_CPU jumper is enabled, otherwise the maximum voltage supported is
[1.70000V]. See 4. CPU / Northbridge overvoltage setting on page 2-23

for details.

3.4.14 CPU PLL Voltage [Auto]

Allows you to set the CPU PLL voltage. The values range from 1.50V to 2.78V with
a 0.02V interval.

3.4.15 FSB Termination Voltage [Auto]

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

1.20V* to 1.90V with a 0.02V interval.

The minimum value of this item becomes 1.10V when a 45nm CPU is installed.

3.4.16 DRAM Voltage [Auto]

Allows you to set the DRAM voltage.
For DDR2, the values range from 1.80V to 3.08V with a 0.02V interval.
For DDR3, the values range from 1.50V to 2.78V with a 0.02V interval.

3.4.17 NB Voltage [Auto]

Allows you to set the North Bridge voltage. The values range from 1.10V to 2.20V*
with a 0.02V interval.

• The value [2.20V] of the NB Voltage item is supported only if the OV_NB
jumper is enabled, otherwise the maximum voltage supported is [1.90V].
See 4. CPU / Northbridge overvoltage setting on page 2-23 for details.

• 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.

3-20 Chapter 3: BIOS setup

Blue Yellow Purple Red

CPU PLL Voltage 1.50V~1.78V 1.80V~2.00V 2.02V~2.20V 2.22V~2.78V

FSB Termination Voltage 1.20V~1.38V 1.40V~1.90V N/A N/A

DRAM Voltage (DDR3) 1.50V~1.68V 1.70V~1.90V 1.92V~2.10V 2.12V~2.78V

DRAM Voltage (DDR2) 1.80V~1.98V 2.00V~2.20V 2.22V~2.40V 2.42V~3.08V

NB Voltage 1.10V~1.26V 1.28V~1.40V 1.42V~1.58V 1.60V~2.20V

3.4.18 SB Voltage [Auto]

Allows you to set the South Bridge voltage. The values range from 1.10V to 1.40V
with a 0.10V interval.

3.4.19 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.

3.4.20 Load-Line Calibration [Auto]

Allows you to select the CPU Load-Line mode. Set to [Disabled] to follow Intel

specications, or to [Enabled] to improve CPU VDroop directly.
Conguration options: [Auto] [Disabled] [Enabled]

3.4.21 CPU Spread Spectrum [Auto]

Set to [Disabled] to enhance FSB overclocking ability or [Auto] for EMI control.

Conguration options: [Auto] [Disabled]

3.4.22 PCIE Spread Spectrum [Auto]

Set to [Disabled] to enhance PCIE overclocking ability or [Auto] for EMI control.

Conguration options: [Auto] [Disabled]

ASUS P5QC

3-21

3.5 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.

Main Ai Tweaker Advanced Power Boot Tools Exit

CPU Conguration

Chipset

Onboard Devices Conguration
USB Conguration

PCIPnP

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

3.5.1 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.

BIOS SETUP UTILITY

Congure CPU.

Select Screen

Select Item
Enter Go to Sub Screen
F1 General Help
F10 Save and Exit
ESC Exit

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 [Enabled]

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

BIOS SETUP UTILITY

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.

Select Screen

Select Item

+- Change Option

F1 General Help
F10 Save and Exit
ESC Exit

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]

3-22 Chapter 3: 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 [Enabled]

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]

ASUS P5QC

3-23

3.5.2 Chipset

The Chipset menu allows you to change the advanced chipset settings. Select an
item then press <Enter> to display the sub-menu.

Advanced

Advanced Chipset Settings

WARMING: Setting wrong values in below sections
may cause system to malfunction.

North Bridge Conguration

North Bridge Chipset Conguration

Advanced

North Bridge Chipset Conguration

Memory Remap Feature [Enabled]

PCI MMIO Allocation: 4GB To 3328MB

Memory Hole [Disabled]

Initiate Graphic Adapter [PEG/PCI]

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]

Memory Hole [Disabled]

Allows you to set the memory hole mode.

Conguration options: [Disabled] [15MB-16MB]

Initiate Graphic Adapter [PEG/PCI]

Allows you to decide which graphics controller to use as the primary boot
device.

Conguration options: [PCI/PEG] [PEG/PCI]

BIOS SETUP UTILITY

BIOS SETUP UTILITY

Congure North Bridge

features.

ENABLE: Allow
remapping of
overlapped PCI memory
above the total
physical memory.

DISABLE: Do not allow
remapping of memory.

3-24 Chapter 3: BIOS setup

3.5.3 Onboard Device Conguration

Advanced

Onboard Device Conguration

High Denition Audio [Enabled]

Front Panel Type [HD Audio]
SPDIF_OUT Mode Setting [SPDIF Output]
Marvell IDE [Enabled]
Marvell IDE Boot ROM [Enabled]
Atheros GigaBit LAN [Enabled]
LAN Boot ROM [Disabled]
LSI Firewire 1394 [Enabled]

Serial Port1 Address [3F8/IRQ4]

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

High Denition Audio [Enabled]

Allows you to enable or disable the High Denition Audio Controller.
Conguration options: [Enabled] [Disabled]

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]

SPDIF_OUT Mode Setting [SPDIF Output]

Allows you to set the video output mode of your graphics card.

Conguration options: [SPDIF Output] [HDMI Output]

Marvell IDE [Enabled]

Allows you to enable or disable the onboard Marvell IDE controller.

Conguration options: [Enabled] [Disabled]

Marvell IDE Boot ROM [Enabled]

This item appears only when you set the previous item to [Enabled].

Conguration options: [Disabled] [Enabled]

BIOS SETUP UTILITY

Enable or Disable

High Denition Audio

Controller

Select Screen

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

Atheros GigaBit LAN [Enabled]

Allows you to enable or disable the onboard Atheros Gigabit LAN.

Conguration options: [Enabled] [Disabled]

LAN Boot ROM [Disabled]

This item appears only when you enable the previous item.

Conguration options: [Disabled] [Enabled]

LSI Firewire 1394 [Enabled]

Conguration options: [Enabled] [Disabled]

ASUS P5QC

3-25

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]

3.5.4 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.

Advanced

USB Conguration

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]

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

The USB Devices Enabled item shows the auto-detected values. If no USB
device is detected, the item shows None.

USB Functions [Enabled]

Allows you to enable or disable the USB Host Controllers.

Conguration options: [Disabled] [Enabled]

BIOS SETUP UTILITY

Options

Disabled
Enabled

Select Screen

Select Item

+- Change Option

F1 General Help
F10 Save and Exit
ESC Exit

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]

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]

The USB 2.0 Controller Mode item appears only when you enable the USB

2.0 Controller.

3-26 Chapter 3: BIOS setup

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]

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]

3.5.5 PCIPnP

The PCIPnP menu items allow you to change the advanced settings for PCI/PnP
devices.

Advanced

Advanced PCI/PnP Settings

WARNING: Setting wrong values in below sections
may cause system to malfunction.

Plug And Play O/S [No]

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

BIOS SETUP UTILITY

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
your system has a Plug
and Play operating
system.

Select Screen

Select Item

+- Change Option

F1 General Help
F10 Save and Exit
ESC Exit

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]

ASUS P5QC

3-27

3.6 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.

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

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

3.6.1 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]

3.6.2 Repost Video on S3 Resume [No]

Determines whether to invoke VGA BIOS POST on S3/STR resume.

Conguration options: [No] [Yes]

BIOS SETUP UTILITY

Select the ACPI state
used for System
Suspend.

Select Screen

Select Item

+- Change Option

F1 General Help
F10 Save and Exit
ESC Exit

3.6.3 ACPI 2.0 Support [Disabled]

Add additional tables as per ACPI 2.0 specications.
Conguration options: [Disabled] [Enabled]

3.6.4 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]

3-28 Chapter 3: BIOS setup

3.6.5 APM Conguration

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]

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

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]

BIOS SETUP UTILITY

<Enter> to select
whether or not to
restart the system
after AC power loss.

Select Screen

Select Item

+- Change Option

F1 General Help
F10 Save and Exit
ESC Exit

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.

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]

ASUS P5QC

3-29

Power On By PS/2 Keyboard [Disabled]

Allows you to disable the Power On by PS/2 keyboard function or set specic keys

on the PS/2 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]

3.6.6 Hardware Monitor

Power

Hardware Monitor

CPU Temperature [47ºC/116.5ºF]
MB Temperature [32ºC/89.5ºF]

CPU Fan Speed [4500RPM]
CPU Q-Fan Control [Disabled]

Chassis Fan 1 Speed [N/A]
Chassis Fan 2 Speed [N/A]
Chassis Q-Fan Control [Disabled]

Power Fan Speed [N/A]

CPU Voltage [ 1.304V]

3.3V Voltage [ 3.248V]
5V Voltage [ 5.112V]
12V Voltage [12.096V]

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

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].

CPU Q-Fan Control [Disabled]

Allows you to enable or disable the CPU Q-fan control feature.

Conguration options: [Disabled] [Enabled]

BIOS SETUP UTILITY

CPU Temperature

Select Screen

Select Item

+- Change Field

F1 General Help
F10 Save and Exit
ESC Exit

The following item appears only when you enable the CPU Q-Fan Control item.

CPU Fan Profile [Standard]

Allows you to set the appropriate performance level of the ASUS Q-Fan.
When set to [Standard], the CPU fan automatically adjusts depending on

the CPU temperature. Set this item to [Silent] to minimize fan speed for

quiet CPU fan operation, or [Turbo] to achieve maximum CPU fan speed.

Conguration options: [Standard] [Silent] [Turbo]

3-30 Chapter 3: BIOS setup

Chassis Fan 1/2 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].

Chassis Q-Fan Control [Disabled]

Allows you to enable or disable the Chassis Q-fan control feature.

Conguration options: [Disabled] [Enabled]

The following item appears only when you enable the Chassis Q-Fan Control
item.

Chassis Fan Profile [Standard]

Allows you to set the appropriate performance level of the ASUS Q-Fan.
When set to [Standard], the chassis fan automatically adjusts depending

on the chassis temperature. Set this item to [Silent] to minimize fan speed

for quiet chassis fan operation, or [Turbo] to achieve maximum chassis fan
speed.

Conguration options: [Standard] [Silent] [Turbo]

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].

CPU 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 want to detect this
item.

ASUS P5QC

3-31

3.7 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.

Main Ai Tweaker Advanced Power Boot Tools Exit

Boot Settings

Boot Device Priority

Boot Settings Conguration

Security

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

BIOS SETUP UTILITY

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.

Select Screen

Select Item

Enter Go to Sub Screen
F1 General Help
F10 Save and Exit
ESC Exit

3.7.1 Boot Device Priority

Boot

Boot Device Priority

1st Boot Device [1st FLOPPY DRIVE]
2nd Boot Device [Hard Drive]
3rd Boot Device [ATAPI CD-ROM]

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

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: [1st FLOPPY DRIVE] [Hard Drive] [ATAPI CD-ROM]

[Disabled]

BIOS SETUP UTILITY

Species the boot

sequence from the
available devices.

A device enclosed in
parenthesis has been
disabled in the
corresponding type
menu.

Select Screen

Select Item

+- Change Option

F1 General Help
F10 Save and Exit
ESC Exit

3-32 Chapter 3: BIOS setup