Asus P5P41D User Manual

P5P41D

Motherboard

E4825

First Edition V1
July 2009

Copyright © 2009 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

Notices ......................................................................................................... vi

Safety information ..................................................................................... vii

About this guide ....................................................................................... viii

P5P41D specications summary .............................................................. ix

Chapter 1: Product introduction

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

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

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

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

1.3.2 Innovative ASUS features ............................................... 1-2

1.4 Before you proceed ..................................................................... 1-4

1.5 Motherboard overview ................................................................. 1-5

1.5.1 Placement direction ........................................................ 1-5

1.5.2 Screw holes .................................................................... 1-5

1.5.3 Motherboard layout ......................................................... 1-6

1.5.4 Layout contents ............................................................... 1-6

1.6 Central Processing Unit (CPU) ................................................... 1-7

1.6.1 Installing the CPU ........................................................... 1-7

1.6.2 Installing the CPU heatsink and fan .............................. 1-10

1.6.3 Uninstalling the CPU heatsink and fan ..........................1-11

1.7 System memory ......................................................................... 1-12

1.7.1 Overview ....................................................................... 1-12

1.7.2 Memory congurations .................................................. 1-13

1.7.3 Installing a DIMM .......................................................... 1-18

1.7.4 Removing a DIMM ........................................................ 1-18

1.8 Expansion slots .......................................................................... 1-19

1.8.1 Installing an expansion card ......................................... 1-19

1.8.2 Conguring an expansion card ..................................... 1-19

1.8.3 PCI slots ........................................................................ 1-19

1.8.4 PCI Express x1 slots ..................................................... 1-19

1.8.5 PCI Express x16 slot ..................................................... 1-19

1.9 Jumpers ...................................................................................... 1-20

iii

Contents

1.10 Connectors ................................................................................. 1-21

1.10.1 Rear panel connectors .................................................. 1-21

1.10.2 Internal connectors ....................................................... 1-22

1.11 Software support ........................................................................ 1-28

1.11.1 Installing an operating system ...................................... 1-28

1.11.2 Support DVD information .............................................. 1-28

Chapter 2: BIOS information

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

2.1.1 ASUS Update utility ........................................................ 2-1

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

2.1.3 ASUS CrashFree BIOS 3 utility ...................................... 2-3

2.2 BIOS setup program .................................................................... 2-4

2.2.1 BIOS menu screen .......................................................... 2-5

2.2.2 Menu bar ......................................................................... 2-5

2.2.3 Navigation keys ............................................................... 2-6

2.2.4 Menu items ..................................................................... 2-6

2.2.5 Submenu items ............................................................... 2-6

2.2.6 Conguration elds ......................................................... 2-6

2.2.7 Pop-up window ............................................................... 2-6

2.2.8 Scroll bar ......................................................................... 2-6

2.2.9 General help ................................................................... 2-6

2.3 Main menu .................................................................................... 2-7

2.3.1 System Time ................................................................... 2-7

2.3.2 System Date .................................................................. 2-7

2.3.3 Primary IDE Master/Slave and SATA 1-4................................2-7

2.3.4 Storage Conguration ..................................................... 2-8

2.3.5 System Information ......................................................... 2-9

2.4 Advanced menu ........................................................................... 2-9

2.4.1 JumperFree Conguration .............................................. 2-9

2.4.2 CPU Conguration .........................................................2-11

2.4.3 Chipset .......................................................................... 2-12

2.4.4 Onboard Devices Conguration .................................... 2-13

2.4.5 USB Conguration ........................................................ 2-13

2.4.6 PCI PnP ........................................................................ 2-14

iv

Contents

2.5 Power menu ................................................................................ 2-15

2.5.1 Suspend Mode .............................................................. 2-15

2.5.2 ACPI 2.0 Support ......................................................... 2-15

2.5.3 ACPI APIC Support ...................................................... 2-15

2.5.4 APM Conguration ........................................................ 2-15

2.5.5 Hardware Monitor ......................................................... 2-16

2.6 Boot menu .................................................................................. 2-17

2.6.1 Boot Device Priority ...................................................... 2-17

2.6.2 Boot Settings Conguration .......................................... 2-17

2.6.3 Security ......................................................................... 2-18

2.7 Tools menu ................................................................................. 2-19

2.7.1 ASUS EZ Flash 2 .......................................................... 2-19

2.7.2 Express Gate ................................................................ 2-19

2.7.3 AI NET 2........................................................................ 2-20

2.8 Exit menu .................................................................................... 2-20

v

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.

REACH

Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://green.asus.com/english/REACH.htm.

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

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

vi

Safety information

Electrical safety

• To prevent electric shock hazard, disconnect the power cable from the electric 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 adapter or extension cord. These devices
could interrupt the grounding circuit.

• Ensure 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.

• The optical S/PDIF is an optional component (may or may not be included in your

motherboard) and is dened as a CLASS 1 LASER PRODUCT.

INVISIBLE LASER RADIATION, AVOID EXPOSURE TO BEAM.

• Never dispose of the battery in re. It could explode and release harmful substances into

the environment.

• Never dispose of the battery with your regular household waste. Take it to a hazardous

material collection point.

• Never replace the battery with an incorrect battery type.

• RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE.

• DISPOSE OF USED BATTERIES ACCORDING TO THE ABOVE BATTERY-RELATED
INSTRUCTIONS.

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, ensure that 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.

This motherboard should only be used in environments with ambient temperatures between
5℃ (14℉) and 40℃ (104℉).

•

Place the product on a stable surface.

•

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

technician or your retailer.

vii

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: BIOS information

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

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.

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

Bol d te xt Indicates a menu or an item to select.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>

viii

P5P41D specications summary

CPU LGA775 Socket for Intel® Core�2 Extreme /Core�2 Quad /Core�2 Extreme /Core�2 Quad /Core�2 Quad /

Chipset Northbridge: Intel® G41

System bus 1333/1066/800MHz
Memory Dual-channel memory architecture

Expansion slots 1 x PCIe x16 slot

Storage Southbridge Intel® ICH7 supports:

LAN PCIe Gb LAN

Audio ALC887 High Denition Audio 8-channel CODEC

USB 8 x USB 2.0/1.1 ports (4 ports at mid-board, 4 ports at back

ASUS Special
features

Core�2 Duo / Pentium® dual-core / Celeron® dual-core /
Celeron® processors
Supports Intel® 45nm multi-core CPU
Intel® Hyper-Threading Technology ready
Supports Enhanced Intel SpeedStep Technology (EIST)

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

Southbridge: Intel® ICH7

- 4 x 240-pin DIMM sockets support unbuffered non-ECC
DDR2 1066* (O.C.)/800/667MHz memory modules

- Supports up to 8GB system memory
* Only the blue slots support memory overclocking to 1066MHz

** Due to the chipset llimitation, you can only use the DIMM

slots under specic conditions. Refer to the table on page

1-13 for details.

*** When you install a total memory of 4GB capacity or more,

Windows® 32-bit operating system may only recognize less
than 3GB. We recommend a maximum of 3GB system
memory if you are using a Windows® 32-bit OS.

2 x PCIe x1 slots
3 x PCI slots

4 x Serial ATA 3Gb/s connectors
1 x UltraDMA 100/66/33 connector

panel)

ASUS CrashFree BIOS 3
ASUS EZ Flash2
ASUS EPU-4 Engine
ASUS Q-Fan
ASUS AI NET2
ASUS MyLogo 2
ASUS Turbo Key

ASUS Express Gate

(continued on the next page)

ix

P5P41D specications summary

Rear panel ports 1 x PS/2 keyboard port

Internal connectors 1 x High Denition front panel audio connector

BIOS features 8 Mb Flash ROM, AMI BIOS, PnP, DMI v2.0, WfM2.0, SMBIOS

Manageability WOL, PXE, WOR by Ring, PME Wake Up

Accessories 1 x UltraDMA 100/66/33 cable

Support DVD Drivers

Form factor ATX form factor: 12 in x8.2 in (30.5 cm x 20.8cm)

1 x PS/2 mouse port
1 x LAN (RJ-45) port
4 x USB 2.0/1.1 ports
8-channel audio I/O port
1 x Optical S/PDIF port
1 x COM port
1 x Parallel port

1 x S/PDIF out connector
1 x System panel connector
2 x USB 2.0 connectors support additional 4 USB 2.0 ports
1 x CPU fan connector

1 x Chassis fan connector
1 x IDE connector
1 x 24-pin EATX Power connector
1 x 4-pin ATX 12V Power connector
4 x SATA connectors

v2.5, ACPI v2 0a

2 x Serial ATA cables
1 x I/O shield
User Manual

ASUS Update
ASUS PC Probe II
Anti-virus software (OEM version)

*Specications are subject to change without notice.

x

Chapter 1

Product introduction

1.1 Welcome!

Thank you for buying an ASUS® P5P41D 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 P5P41D motherboard

Cables 2 x Serial ATA cables

1 x Ultra DMA 100/66/33 cable

Accessories 1 x I/O shield

Application DVD ASUS motherboard support DVD

Documentation User Manual

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

1.3 Special features

1.3.1 Product highlights

Intel® Core™2 Extreme / Core™2 Quad / Core™2 Duo CPU

ASUS P5P41D 1-1

support

This motherboard supports Intel® LGA775 Core� 2 Extreme / Core�
2 Quad/ Core� 2 Duo processors, which are excellent for multitasking,

multimedia, and enthusiastic gamers with 1333/ 1066/ 800 MHz FSB.

This motherboard also supports Intel® CPUs in the 45nm manufacturing
process.

Intel® G41 Chipset

The Intel® G41 Express Chipset is designed to support dual-channel
DDR2 1066 (overclocking)/800/667 architecture, 1333/1066/800 Front
Side Bus (FSB), PCIe 1.1, and mutli-core CPUs. It especially includes
Intel® Fast memory bandwidth and reduces the latency of the memory
accesses.

DDR2 1066 (O.C.)/800/667 support

This motherboard supports DDR2 memory that features data transfer

rates of 1066 (O.C.)/ 800/ 667 MHz providing great performance for 3D

graphics and other memory-demanding applications.

Serial ATA 3Gb/s technology

This motherboard supports hard drives based on the Serial ATA (SATA)

3Gb/s storage specications, delivering enhanced scalability and

doubling the bus bandwidth for high-speed data saving and retrieval.

Gigabit LAN solution

The onboard LAN controller is a highly integrated Gb LAN controller. It is

enhanced with an ACPI management function to provide efcient power

management for advanced operating systems.

High Denition Audio

The onboard 8-channel ALC887 High Denition Audio CODEC enables

high-quality audio that automatically detects peripherals plugged into the
audio I/O jacks. ALC887 also supports the Windows® Vista Premium OS.

1.3.2 Innovative ASUS features

ASUS EPU

ASUS EPU (Energy Processing Unit) provides total system power
management by detecting the current PC loading and intelligently
moderating power in real-time. It automatically provides the most
appropriate power usage to save power and money.

Turbo Key

ASUS Turbo Key allows you to turn the PC power button into
an overclocking button. After you easy setup, Turbo Key boosts
performances without interrupting ongoing work or games, simply through
pressing the button.

ASUS Q-FAN

ASUS Q-FAN technology intelligently and automatically adjusts CPU fan
speed according to system load and temperature, enabling users to work
in distraction-free environment with minimal noise.

1-2 Chapter 1: Product introduction

ASUS Express Gate

Express Gate is a unique OS built into the motherboard. Five seconds
after bootup, you can instantly surf the Internet without entering the
Windows OS.

• ASUS Express Gate supports le uploading from SATA HDDs, ODDs, and USB
drives. It supports le downloading to USB devices only.

• The actrual boot time is subject to hardware conguration and product models.

• Express Gate complies with the OpenGL standard. Refer to http://support.asus.com
for Express Gate source codes.

ASUS MyLogo2™

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

ASUS CrashFree BIOS 3

ASUS CrashFree BIOS 3 is an auto-recovery tool that allows you to

restore a corrupted BIOS le using the bundled support DVD or USB
ash disk that contains the latest BIOS le.

ASUS EZ Flash 2

ASUS EZ Flash 2 is a utility that allows you to update the BIOS without
using an OS-based utility.

ASUS AI NET2

ASUS AI NET2 remotely detects the cable connection immediately after
turning on the system, and any faulty cable connections are reported
back up to 100 meters at 1 meter accuracy.

C.P.R. (CPU Parameter Recall)

The BIOS C.P.R. feature automatically restores the CPU default settings
when the system hangs due to overclocking failure. 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 parameters to their default settings.

Green ASUS

This motherboard and its packaging comply with the European Union’s
Restriction on the use of Hazardous Substances (RoHS). This is in line

with the ASUS vision of creating environment-friendly and recyclable

products/packaging to safeguard consumers’ health while minimizing the

impact on the environment.

ASUS P5P41D 1-3

1.4 Before you proceed

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

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

• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, 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, or components.

Onboard LED

The motherboard comes with a standby power LED that lights up to indicate that the
system is ON, in sleep mode, or in soft-off mode. This is a reminder that you must
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.

1-4 Chapter 1: Product introduction

1.5 Motherboard overview

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

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

1.5.1 Placement direction

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

1.5.2 Screw holes

Place six 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

ASUS P5P41D 1-5

1.5.3 Motherboard layout

1.5.4 Layout contents

Connectors/Jumpers/Slots Page Connectors/Jumpers/Slots Page

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

2. CPU and chassis fan connectors (4-pin
CPU_FAN, 3-pin CHA_FAN)

3. Intel CPU socket 1-7 9. Clear RTC RAM (3-pin CLRTC) 1-20

4. DDR2 DIMM sockets 1-12 10. USB connectors (10-1 pin USB56, USB78) 1-27

5. Serial ATA connectors (7-pin SATA1-4) 1-24 11. Digital audio connector (4-1 pin SPDIF_OUT) 1-23

6. IDE connector (40-1 pin PRI_IDE) 1-25 12. Front panel audio connector (10-1 pin AAFP) 1-24

1-6 Chapter 1: Product introduction

1-23 7. Onboard LED 1-4

1-22 8. System panel connector (20-8 pin PANEL) 1-26

1.6 Central Processing Unit (CPU)

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

• Unplug all power cables before installing the CPU.

• Connect the CPU fan cable to the CPU_FAN connector and chassis fan cable to the
CHA_FAN connector to ensure system stability.

• Upon purchase of the motherboard, ensure 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.

The motherboard supports Intel® LGA775 processors with the Intel® Enhanced Intel
SpeedStep® Technology (EIST) and Hyper-Threading Technology.

1.6.1 Installing the CPU

To install a CPU:

1. Locate the CPU socket on the motherboard.

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

ASUS P5P41D 1-7

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.

Retention tab

A

B

Load lever

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).

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

bottom-left corner of the socket then t

the socket alignment key into the CPU
notch.

PnP cap

Load plate

4B

4A

3

CPU notch

Gold
triangle
mark

Alignment key

1-8 Chapter 1: Product introduction

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

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

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

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

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

A

B

ASUS P5P41D 1-9

1.6.2 Installing the CPU heatsink and fan

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

•

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

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

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

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

To install the CPU heatsink and fan:

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

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

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

A

B

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

B

A

A

B

B

A

1

1

1-10 Chapter 1: Product introduction

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

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

1.6.3 Uninstalling the CPU heatsink and fan

To uninstall the CPU heatsink and fan:

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

2. Rotate each fastener counterclockwise.

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

A

A

B

B

B

B

ASUS P5P41D 1-11

A

A

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

5. Rotate each fastener clockwise to ensure
correct orientation when reinstalling.

1.7 System memory

1.7.1 Overview

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

(DIMM) sockets. The gure illustrates the location of the DDR2 DIMM sockets:

Channel Sockets

Channel A DIMM_A1 + DIMM_A2

Channel B DIMM_B1 +DIMM_B2

1-12 Chapter 1: Product introduction

1.7.2 Memory congurations

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

• DDR2 1066 memory modules are only supported by DIMM_A1 and DIMM_A2.

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

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

- Use a maximum of 3GB system memory if you are using a 32-bit WindowsUse a maximum of 3GB system memory if you are using a 32-bit Windows® OS.

- Install a 64-bit WindowsWindows® OS when you want to install 4GB or more memory on
the motherboard.

• This motherboard does not support DIMMs made up of 256 megabits (Mb) chips or less.

• Due to chipset limitation, you can only use the DIMM slots under specic conditions.

Refer to the table below for details.

Mode DIMM_A1 DIMM_A2 DIMM_B1 DIMM_B2
One DIMM DS/SS

Two DIMMs DS/SS** DS/SS**

DS/SS DS/SS

Three DIMMs SS SS DS/SS

Four DIMMs SS SS SS SS

SS SS DS/SS

DS/SS SS SS

* DS: Double-sided DIMM; SS: Single-sided DIMM
** When using two DIMMs, we recommend that you insert the DIMMs in DIMM_A1 and

DIMM_B1, or in DIMM_A2 and DIMM_B2.

DS/SS

DS/SS

DS/SS

DS/SS** DS/SS**

DS/SS DS/SS

DS/SS SS SS

• This motherboard supports up to 8 GB on Windowsindows® XP Professional x64 and Windows®
Vista x64 editions. You may install a maximum of 2GB DIMM on each slot.. You may install a maximum of 2GB DIMM on each slot.

• The default memory operation frequency is dependent on its Serial Presence Detect
(SPD), which is the standard way of accessing information from a memory module.
Under the default state, some memory modules for overclocking may operate at a lower
frequency than the vendor-marked value.

• For system stability, use a more efcient cooling system to support a full memory load (2

DIMMs) or overclocking conditions.

• Some old-version DDR2-800 DIMMs may not match Intel®’s On-Die-Termination (ODT)
requirement and will automatically downgrade to run at DDR2-667. If this happens,
contact your memory vendor to check the ODT value.

• Due to chipset limitation, DDR2-800 with CL=4 will be downgraded to run at DDR2-667
by default setting. If you want to operate with lower latency, adjust the memory timing
manually.

ASUS P5P41D 1-13

P5P41D Motherboard Qualied Vendors Lists (QVL)

DDR2-1066 MHz capability

Vendor Part No. Size

Apacer 78.0AGBD.9L5 1024MB SS N/A Heat-Sink Package 5-5-5-15 •

Corsair CM2X1024-8500C5 1024MB DS Corsair Heat-Sink Package •

Corsair CM2X2048-8500C5D 4096MB(kit of 2) DS N/A Heat-Sink Package 5-5-5-15 •

Crucial BL12864AA1065.8FE5 1024MB SS N/A Heat-Sink Package •

Crucial CT25664AA1067.16FE1 2048MB DS Micron 9CE12 D9JKH 7-7-7-13 •

G.SKILL F2-8500CL5S-1GBPK 1024MB DS N/A Heat-Sink Package 5-5-5-15 •

G.SKILL F2-8500CL5D-2GBPK 2048MB(Kit of 2) DS N/A Heat-Sink Package 5-5-5-15 •

G.SKILL F2-8500CL5D-4GBPK 4096MB(kit of 2) DS N/A Heat-Sink Package 5-5-5-15 •

GEIL GB24GB8500C5QC 1024MB SS GEIL GL2L128M88BA25AB 5 •

GEIL GE22GB1066C5DC 1024MB SS GEIL Heat-Sink Package 5 •

GEIL GE24GB1066C5QC 1024MB SS GEIL Heat-Sink Package 5 •

GEIL GB24GB8500C5DC 2048MB DS GEIL GL2L128M88BA25AB 5 •

GEIL GE24GB1066C5DC 2048MB DS GEIL Heat-Sink Package 5 •

GEIL GX24GB8500C5UDC 4096MB(kit of 2) DS N/A Heat-Sink Package 5 •

kingmax KLED48F-B8KU6-NGES 1024MB SS kingmax KKB8FNUXF-DXX-18A 6-6-6-24 1.9V •

kingmax KLEE88F-B8KU6-NNAS 2048MB DS kingmax KKB8FNUXF-DXX-18A 6-6-6-24 1.9V •

Kingston KHX8500D2K2/1GN(EPP) 1024MB(Kit of 2) SS Kingston Heat-Sink Package 5-5-5-18 1.8V •

Kingston KHX8500D2/1G 1024MB SS N/A Heat-Sink Package •

Kingston KHX8500D2K2/2G 1024MB DS N/A Heat-Sink Package 5-5-5-15 2.2V •

Kingston KHX8500D2K2/2GN(EPP) 1024MB DS Kingston Heat-Sink Package 5-5-5-18 1.8V •

Kingston KHX8500D2K2/4G 2048MB DS N/A Heat-Sink Package 5-5-5-15 2.2V •

Micron MT16HTF25664AY-1GAE1 2048MB DS Micron 9CE12 D9JKH 7-7-7-13 •

OCZ OCZ2N10662GK(Epp) 2048MB(Kit of 2) DS N/A Heat-Sink Package 5-5-5-15 21.V •

OCZ OCZ2F10664GK 4096MB(kit of 2) DS N/A Heat-Sink Package 6-7-7-20 2.2V •

PSC AL8E8G73F-AE1 2048MB DS PSC A3R1GE3FGF907

Transcend TX1066QLU-2GK 2048MB(Kit of 2) SS N/A Heat-Sink Package 5 •

Transcend TX1066QLU-4GK 4096MB(kit of 2) DS Transcend Heat-Sink Package 5 •

SS/DSChip

Brand

Chip No.

MAT0FTAIWAN-G8E

Timing

Lable

Voltage

(BIOS)

5-5-5-12 •

DIMM

Support

A*

DDR2-800 MHz capability

Voltage

DIMM

Support

A* B* C*

Vendor Part No. Size

A-Data AD2800E001G0U 2048MB(Kit of 2) SS N/A Heat-Sink Package 4-4-4-12 2.0~2.1V • • •

A-Data M2GVD6G314170Q1E58 1024MB DS VDATA VD29608A8A-25EG80813 • •

A-Data AD2800002GMU 2048MB DS Hynix Heat-Sink Package • •

A-Data AD2800E002GOU 4096MB(Kit of 2) DS N/A Heat-Sink Package 4-4-4-12 1.9~2.1V • •

Apacer 78.91G9I.9K5 512MB SS Apacer AM4B5708JQJS8E0751C 5 • •

Apacer 78.01GA0.9L5 1024MB SS Apacer AM4B5808FEWS8E0909C 5 • • •

Corsair CM2X1024-6400 1024MB DS Corsair Heat-Sink Package • •

Corsair XMS2-6400 1024MB DS Corsair Heat-Sink Package 4 • •

Corsair XMS2-6400 1024MB DS Corsair Heat-Sink Package 5 • •

Corsair CM2X2048-6400C5DHX 4096MB(Kit of 2) DS N/A Heat-Sink Package 5 • •

Corsair CM2X2048-6400C5 4096MB(Kit of 2) DS N/A Heat-Sink Package 5 • •

SS/DSChip

Brand

Chip No.

Timing

Lable

(BIOS)

(continued on the next page)

1-14 Chapter 1: Product introduction

DDR2-800 MHz capability

Voltage

DIMM

Support

A* B* C*

Vendor Part No. Size

Crucial BL12864AL80A.8FE5(EPP) 2048MB(kit of 2) SS N/A Heat-Sink Package 4-4-4-12 • • •

Crucial CT25664AA800.16FG 2048MB DS Micron 8ZG27 D9JWB 6-6-6-12 • •

Crucial BL25664AL80A.16FE5(EPP) 4096MB(kit of 2) DS N/A Heat-Sink Package 4-4-4-12 • •

Crucial BL25664AR80A.16FE5(EPP) 4096MB(kit of 2) DS N/A Heat-Sink Package 4-4-4-12 • •

G.SKILL F2-6400CL5D-1GBNQ 512MB SS G.SKILL Heat-Sink Package

G.SKILL F2-6400CL4D-2GBPK 1024MB DS G.SKILL Heat-Sink Package 4 • •

G.SKILL F2-6400CL5D-2GBNQ 1024MB DS G.SKILL Heat-Sink Package 5 • •

G.SKILL F2-6400CL4D-4GBPK 2048MB DS G.SKILL Heat-Sink Package 4 • •

G.SKILL F2-6400CL5D-4GBPQ 2048MB DS G.SKILL Heat-Sink Package 5 • •

G.SKILL F2-6400CL6Q-16GMQ 4096MB DS N/A Heat-Sink Package 5 • •

GEIL GB22GB6400C4DC 1024MB DS GEIL GL2L64M088BA30EB 5 • •

GEIL GB22GB6400C5DC 1024MB DS GEIL GL2L64M088BA30EB 5 • •

GEIL GB24GB6400C4QC 1024MB DS GEIL GL2L64M088BA30EB 4 • •

GEIL GB24GB6400C5QC 1024MB DS GEIL GL2L64M088BA30EB 5 • •

GEIL GE22GB800C4DC 1024MB DS GEIL Heat-Sink Package 4 • •

GEIL GE22GB800C5DC 1024MB DS GEIL Heat-Sink Package 5 • •

GEIL GE24GB800C4QC 1024MB DS GEIL Heat-Sink Package 4 • •

GEIL GE24GB800C5QC 1024MB DS GEIL Heat-Sink Package 5 • •

GEIL GX22GB6400DC 1024MB DS GEIL Heat-Sink Package 5 1.8V • •

GEIL GX22GB6400UDC 1024MB DS GEIL Heat-Sink Package 4 •

GEIL GB24GB6400C4DC 2048MB DS GEIL Heat-Sink Package 5 • •

GEIL GB24GB6400C5DC 2048MB DS GEIL GL2L128M88BA25AB 5 • •

GEIL GB28GB6400C4QC 2048MB DS GEIL GL2L128M88BA25AB 4 • •

GEIL GB28GB6400C5QC 2048MB DS GEIL GL2L128M88BA25AB 5 • •

GEIL GE24GB800C4DC 2048MB DS GEIL Heat-Sink Package 4 • •

GEIL GE24GB800C5DC 2048MB DS GEIL Heat-Sink Package 5 • •

GEIL GE28GB800C4QC 2048MB DS GEIL Heat-Sink Package 4 • •

GEIL GE28GB800C5QC 2048MB DS GEIL Heat-Sink Package 5 • •

GEIL GX22GB6400C4USC 2048MB DS GEIL Heat-Sink Package 4 • •

GEIL GX22GB6400LX 2048MB DS GEIL Heat-Sink Package 5 • •

GEIL GX24GB6400DC 2048MB DS GEIL Heat-Sink Package 5 • •

Kingmax KLDD48F-B8KU5 NGES 1024MB SS Kingmax KKB8FNUBF-DNX-25A • • •

kingmax KLDE88F-B8KU5 NHES 2048MB DS kingmax KKB8FNUBF-DNX-25A •

Kingston KVR800D2N5/ 512(low

prole)

Kingston KVR800D2N6/ 512 512MB SS Elpida E5108AJBG-8E-E 6 • •

Kingston KHX6400D2LLK2/1GN 1024M(Kit of 2) SS Kingston Heat-Sink Package 4-4-4-12 2.0V • • •

Kingston KVR800D2N5/1G(low prole) 1024MB SS Elpida E1108AEBG-8E-F 5 1.8V • • •

Kingston KVR800D2N6/1G(low prole) 1024MB SS Samsung K4T1G084QE 6 1.8V • • •

Kingston KHX6400D2K2/2G 2048MB(Kit of 2) DS N/A Heat-Sink Package 5-5-5-15 2.0V • •

Kingston KVR800D2N5/2G(low prole) 2048MB DS Kingston D1288TEFCGL25U 5 1.8V • •

Kingston KVR800D2N6/2G(low prole) 2048MB DS Samsung K4T1G084QE 6 1.8V • •

Kingston KVR800D2N6/4G 4096MB DS Elpida E2108ABSE-8G-E 6 1.8V • •

Micron MT16HTF25664AY-800G1 2048MB DS Micron 8ZG27 D9JWB 6-6-6-12 • •

OCZ OCZ2G800R22GK 1024MB DS OCZ Heat-Sink Package 4-5-5-15 2.0V • •

OCZ OCZ2P800R22GK 1024MB DS OCZ Heat-Sink Package 4-4-4-15 1.9 - 2.1 V • •

SS/DSChip

Brand

512MB SS ELPIDA E5108AJBG-8E-E 1.8V • • •

Chip No.

SN:8151030036642

Timing

Lable

(BIOS)

5-5-5-15 • • •

(continued on the next page)

ASUS P5P41D 1-15

DDR2-800 MHz capability

Voltage

DIMM

Support

A* B* C*

Vendor Part No. Size

OCZ OCZ2RPR8002GK 1024MB DS OCZ Heat-Sink Package 4-4-4-15 2.1V • •

OCZ OCZ2VU8004GK 1024MB DS OCZ Heat-Sink Package 5-6-6-18 1.8V • •

OCZ OCZ2SE8002GK 2048MB(Kit of 2) DS N/A Heat-Sink Package 5-5-5-15 1.8V • •

OCZ OCZ2F8004GK(EPP) 2048MB DS N/A Heat-Sink Package 5-4-4-18 2.1V • •

OCZ OCZ2P8004GK 4096MB(Kit of 2) DS N/A Heat-Sink Package 5-4-4-15 2.1v • •

PSC AL7E8F73C-8E1 1024MB SS PSC A3R1GE3CFF734MAA0E 5 • •

PSC AL7E8G73F-8E1 1024MB SS PSC P3R1GE3FGF850MAC19 • • •

PSC AL8E8F73C-8E1 2048MB DS PSC A3R1GE3CFF734MAA0E 5 • •

PSC AL8E8G73F-8E1 2048MB DS PSC P3R1GE3FGF850MAC19 • •

PSC PL8E8F73C-8E1 2048MB DS PSC SHG772-AA3G 5 • •

PSC PL8E8G73E-8E1 2048MB DS PSC XCP271A3G-A 5 • •

SAMSUNG M378T6553GZS-CF7 512MB SS Qimonda K4T51083QG-HCF7 6 • •

SAMSUNG M378T2863EHS-CF7 1024MB SS Samsung K4T1G084QE • • •

SAMSUNG M378T2863QZS-CF7 1024MB SS Qimonda K4T1G084QQ-HCF7 6 • • •

SAMSUNG M378T2953GZ3-CF7 1024MB DS Samsung K4T51083QG • •

SAMSUNG M378T2953GZ3-CF7 1024MB DS Samsung K4T51083QG-HCF7 6 • •

SAMSUNG M37875663QZ3-CF7 2048MB DS Samsung K4T1G084QQ-HCF7 6 • •

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

Super

T800UB1GC4 1024MB DS Super

Talent

Transcend TS64MLQ64V8J 512MB SS Micron 7HD22 D9GMH 5 • • •

Transcend JM800QLU-1G 1024MB SS Transced TQ1243PCF8 5 • •

Transcend TS128MLQ64V8U 1024MB SS ELPIDA E1108ACBG-8E-E 5 • • •

Transcend JM800QLJ-1G 1024MB DS Transced TQ123PJF8F0801 5 • •

Transcend JM800QLJ-1G 1024MB DS Transcend TQ123YBF8 T0747 5 • • •

Transcend TS128MLQ64V8J 1024MB DS Mircon 7HD22D9GMH 5 • •

Transcend JM800QLU-2G 2048MB DS Transced TQ243PCF8 5 • •

Transcend TS256MLQ64V8U 2048MB DS Elpida E1108ACBG-8E-E 5 • •

SS/DSChip

Brand

Talent

Chip No.

Heat-Sink Package 4 1.8V • •

Timing

Lable

(BIOS)

DDR2-667 MHz capability

Voltage

DIMM

Support

A* B* C*

Vendor Part No. Size

A-Data M2OAD5H3J4170I1C53 2048MB DS ADATA AD20908A8A-3EG 30724 • •

Apacer 78.91G92.9K5 512MB SS Apacer AM4B5708JQJS7E0751C 5 • • •

Apacer AU 512E667C5KBGC 512MB SS Apacer AM4B5708GQJS7E06332F 5 • •

Apacer AU 512E667C5KBGC 512MB SS Apacer AM4B5708MIJS7E0627B 5 • •

Apacer 78.01G9O.9K5 1024MB SS Apacer AM4B5808CQJS7E0751C 5 • • •

Apacer AU01GE667C5KBGC 1024MB DS Apacer AM4B5708GQJS7E0636B • •

Apacer AU01GE667C5KBGC 1024MB DS Apacer AM4B5708MIJS7E0627B 5 • •

Apacer 78.A1G9O.9K4 2048MB DS Apacer AM4B5808CQJS7E0749B 5 • •

Corsair VS 512MB667D2 512MB DS Corsair MIII0052532M8CEC • •

Corsair VS1GB667D2 1024MB DS Corsair MID095D62864M8CEC • •

Corsair XMS2-5400 1024MB DS Corsair Heat-Sink Package 4 • •

G.SKILL F2-5400PHU2-2GBNT 2048MB(Kit of 2) DS G.SKILL D2 64M8CCF 0815 C7173S 5-5-5-15 • •

SS/DSChip

Brand

Chip No.

Timing

Lable

(BIOS)

continued on the next page

1-16 Chapter 1: Product introduction

DDR2-667 MHz capability

Voltage

DIMM

Support

A* B* C*

Vendor Part No. Size

G.SKILL F2-5300CL5D-4GBMQ 4096MB(Kit of 2) DS G.SKILL Heat-Sink Package

GEIL GX21GB5300SX 1024MB DS GEIL Heat-Sink Package 3 • •

GEIL GX22GB5300LX 2048MB DS GEIL Heat-Sink Package 5 • •

GEIL GX24GB5300LDC 2048MB DS GEIL Heat-Sink Package 5 • •

Kingston KVR667D2N5/ 512(low prole) 512MB SS Elpida E5108AJBG-6E-E 5 1.8V • • •

Kingston KVR667D2N5/1G(low prole) 1024MB SS Elpida E1108AEBG-8E-F 1.8V • • •

Kingston KVR667D2N5/1G(low prole) 1024MB DS Elpida E5108AJBG-8E-E 5 1.8V • •

Kingston KVR667D2N5/2G(low prole) 2048MB DS Elpida E1108ACBG-8E-E 5 1.8V • •

Micron MT8HTF12864AY-667E1 1024MB SS Micron D9HNL 7ZE17 5 • •

PSC AL6E8E63J-6E1 512MB SS PSC A3R12E3JFF717B9A00 5 • • •

PSC AL7E8F73C-6E1 1024MB SS PSC A3R1GE3CFF734MAA0J 5 • • •

PSC AL6E8E63J-6E1 1024MB DS PSC A3R12E3JFF717B9A01 5 • •

PSC AL8E8F73C-6E1 2048MB DS PSC A3R1GE3CFF733MAA00 5 • •

SAMSUNG M378T5263AZ3-CE6 4096MB DS Samsung K4T2G084QA-HCE6 • •

Super Talent T667UB1GV 1024MB DS Super

Transcend JM667QLU-1G 1024MB SS Transced TQ243PCF8T0838 5 • •

Transcend JM667QLJ-1G 1024MB DS Elpida E5108AJBG-6E-E 5 • •

Transcend JM667QLU-2G 2048MB DS Transced TQ243PCF8T0834 5 • •

Twinmos 8D-A3JK5MPETP 512MB SS PSC A3R12E3GEF633ACAOY 5 • • •

SS/DSChip

Brand

Talent

Chip No.

SN:8151030036559

PG 64M8-800 0750 5 1.8V • •

Timing

Lable

(BIOS)

5-5-5-15 • •

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

• A*: Supports one module inserted into any slot as Single-channel memory conguration.

• B*: Supports one pair of modules inserted into either the blue or black slots as one pair

of Dual-channel memory conguration

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

pairs of Dual-channel memory conguration.

Visit the ASUS website at www.asus.com for the latest QVL.

ASUS P5P41D 1-17

1.7.3 Installing a DIMM

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

To install a DIMM:

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

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

Unlocked retaining clip

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

DIMM into a socket to avoid damaging the DIMM.

2

DDR2 DIMM notch

1

1

3. Firmly insert the DIMM into the socket
until the retaining clips snap back in place

3

and the DIMM is properly seated.

Locked Retaining Clip

1.7.4 Removing a DIMM

To remove a DIMM:

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

2

Support the DIMM lightly with

your ngers when pressing the

retaining clips. The DIMM might

get damaged when it ips out with

extra force.

2. Remove the DIMM from the socket.

1-18 Chapter 1: Product introduction

1

DDR2 DIMM notch

1

1.8 Expansion slots

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

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

1.8.1 Installing an expansion card

To install an expansion card:

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

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

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

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

seated on the slot.

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

6. Replace the system cover.

1.8.2 Conguring an expansion card

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

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

2. Assign an IRQ to the card.

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.

1.8.3 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.

1.8.4 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.

1.8.5 PCI Express x16 slot

This motherboard supports a PCI Express x16 graphics card that complies with the PCI

Express specications.

ASUS P5P41D 1-19

1.9 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 CPU Parameter Recall (C.P.R.) feature. Shut
down and reboot the system, then the BIOS automatically resets parameter settings to
default values.

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

1-20 Chapter 1: Product introduction

1.10 Connectors

1.10.1 Rear panel connectors

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

2. Parallel port. This 25-pin port connects a parallel printer, a scanner, or other devices.

3. LAN (RJ-45) port. 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.

LAN port LED indications

LED

LAN port

SPEED

LED

ACT/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

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

and 6-channel, and 8-channel congurations, 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 speaker in an 8-channel

audio conguration.

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

ASUS P5P41D 1-21

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

Port Headset 2-channel 4-channel 6-channel 8-channel

Light Blue Line In Line in Line in Line in

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

Pink Mic In Mic In Mic in Mic in

Orange - - Center/Subwoofer Center/Subwoofer

Black - Rear Speaker Out Rear Speaker Out Rear Speaker Out

Gray - - - Side Speaker Out

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

available for connecting USB 2.0 devices.

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

available for connecting USB 2.0 devices.

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

optical S/PDIF cable.

13. COM port. This 9-pin COM1 port is for pointing devices or other serial devices.

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

1.10.2 Internal connectors

1. CPU and chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN)

These fan connectors support a cooling fan of 350mA~740mA (8.88W max.) or a total
of 1A~2.22A (26.64W max.) at +12V. Connect the fan cables to the fan connectors on
the motherboard, ensuring 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 4-pin CPU fan connector supports the ASUS Q-FAN feature.

1-22 Chapter 1: Product introduction

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

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

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

•

For a fully congured system, we recommend that you use a power supply unit (PSU)

that complies with ATX 12 V Specication 2.0 (or later version) and provides a minimum

power of 400 W.

• Do not forget to connect the 4-pin ATX12V power plug. Otherwise, the system will not
boot.

• We recommend that you use a PSU with a higher power output when conguring a

system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.

3. Digital audio connector (4-1 pin SPDIF_OUT)

This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. Connect
the S/PDIF Out module cable to this connector, then install the module to a slot
opening at the back of the system chassis.

The S/PDIF module is purchased separately.

ASUS P5P41D 1-23

4. Serial ATA connectors (7-pin SATA1-4)

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

Install the Windows® XP Service Pack 2 or later version before using Serial ATA.

5. 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, set
the Front Panel Type item in the BIOS setup to [HD Audio]. If you want to connect an
AC'97 front panel audio module to this connector, set the item to [AC97]. By default, this
connector is set to [HD Audio]. See section 2.4.3 Chipset for details.

1-24 Chapter 1: Product introduction

6. IDE connector (40-1 pin PRI_IDE)

The onboard IDE connector is for the Ultra DMA 100/66/33 signal cable. There are
three connectors on each Ultra DMA 100/66/33 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) Cable connector

Single device Cable-Select or Master - Black

Cable-Select

Two devices

Master Master

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 100/66/33 IDE devices.

Master Black

Slave Gray

Black or gray

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

ASUS P5P41D 1-25

7. 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.

•

Power/Soft-off button (2-pin PWRSW)
This 2-pin 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.

• System warning speaker (2-pin SPEAKER)

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

1-26 Chapter 1: Product introduction

8. USB connectors (10-1 pin USB56, USB78)

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!

The USB module cable is purchased separately.

ASUS P5P41D 1-27

1.11 Software support

1.11.1 Installing an operating system

This motherboard supports Windows® XP/Vista Operating Systems (OS). Always install the

latest OS version and corresponding updates to maximize the features of your hardware.

• Motherboard settings and hardware options vary. Refer to your OS documentation for
detailed information.

• Ensure that you install Windows® XP Service Pack 3 / Windows® Vista Service Pack 1
before installing the drivers for better compatibility and system stability.

1.11.2 Support DVD information

The Support DVD that comes with the motherboard package contains the drivers, software
applications, and utilities that you can install to avail all motherboard features.

The contents of the Support DVD are subject to change at any time without notice. Visit the
ASUS website at www.asus.com for updates.

To run the Support DVD

Place the Support DVD to the optical drive. The DVD automatically displays the Drivers menu
if Autorun is enabled in your computer.

The following screen is for reference only.

Click an icon to
display Support DVD/
motherboard information

Click an item to install

If Autorun is NOT enabled in your computer, browse the contents of the Support DVD to

locate the le ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run

the DVD.

1-28 Chapter 1: Product introduction

Chapter 2

BIOS information

2.1 Managing and updating your BIOS

Save a copy of the original motherboard BIOS le to a USB ash disk in case you need to

restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update
utility.

2.1.1 ASUS Update utility

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

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

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

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 ASUS Update.

3. Follow the onscreen instructions to complete the installation.

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

Updating the BIOS

To update the BIOS:

1. From the Windows® desktop, click Start > Programs > ASUS > ASUSUpdate >

ASUSUpdate to launch the ASUS Update utility.

2. From the dropdown list, select any of the updating process:

ASUS P5P41D 2-1

Updating from the Internet

a. Select Update BIOS from the Internet, then click Next.

b. Select the ASUS FTP site nearest you to avoid network trafc, or click Auto

Select then click Next.

c. From the FTP site, select the BIOS version that you wish to download then click

Next.

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

Updating from a BIOS file

a. Select Update BIOS from a le, then click Next.

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

3. Follow the onscreen instructions to complete the updating process.

2.1.2 ASUS EZ Flash 2 utility

The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based
utility.

Before you start using this utility, download the latest BIOS le from the ASUS website at

www.asus.com.

To update the BIOS using EZ Flash 2:

1. Insert the USB ash disk that contains the latest BIOS le to the USB port, then launch

EZ Flash 2 in any of these two ways:

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

ASUSTek EZ Flash 2 BIOS ROM Utility V3.36

FLASH TYPE: WOINBOND W25X80

Current ROM

BOARD: P5P41D
VER: 0203
DATE: 06/23/2009

PATH: A:\

A:

Note

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

2-2 Chapter 2: BIOS information

Update ROM

BOARD: Unknown
VER: Unknown
DATE: Unknown

• Enter the BIOS setup program. Go to the Tools menu to select EZ Flash 2 and
press <Enter> to enable it.
Press <Tab> to switch between drives until the correct BIOS le is found.

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

and automatically reboots the system when done.

• Only a USB ash disk with FAT 32/16 format and single partition can support the ASUS

EZ Flash 2 utility.

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

2.1.3 ASUS CrashFree BIOS 3 utility

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

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

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

• Prepare the motherboard support DVD or the USB ash disk containing the updated

motherboard BIOS before using this utility.

• Always connect the SATA cable to the SATA1 / SATA 2 connector. Otherwise, the utility
will not function.

Recovering the BIOS

To recover the BIOS:

1. Turn on the system.

2. Insert the support DVD or USB ash disk containing the BIOS le to the optical drive or

USB port.

3. The utility displays the following message and automatically checks the support DVD

or USB ash disk for the BIOS le.

Bad BIOS checksum. Starting BIOS recovery...
Checking for CD-ROM...
CD-ROM not found!
Checking for USB Device...

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

Bad BIOS checksum. Starting BIOS recovery...
Checking for USB Device...
USB Device found.

Reading le “P5P41D.ROM”. Completed.

Start Erasing...\

ASUS P5P41D 2-3

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

• Only a USB ash disk with FAT 32/16 format and single partition can support ASUS
CrashFree BIOS 3. The device size should be smaller than 8GB.

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

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

the latest BIOS le from the ASUS website at www.asus.com.

2.2 BIOS setup program

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

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

using this utility.

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

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

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

in the CMOS RAM of the SPI chip.
The SPI chip on the motherboard stores the Setup utility. When you start up the computer,

the system provides you with the opportunity to run this program. Press <Del> during the
Power-On Self-Test (POST) to enter the Setup utility. Otherwise, POST continues with its test
routines.

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

• Restart using the OS standard shutdown procedure.

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

• Press the reset button on the system chassis.

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

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

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

2-4 Chapter 2: BIOS information

• 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 Setups Default item under the Exit Menu. See section 2.8 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 at www.asus.com to download the latest BIOS le for this

motherboard.

2.2.1 BIOS menu screen

Menu bar

Main Advanced Power Boot Tools Exit

System Time [00:31:48]

System Date [Tue 06/02/2009]

Primary IDE Master :[Not Detected]
Primary IDE Slave :[Not Detected]
SATA 1 :[Not Detected]
SATA 2 :[Not Detected]
SATA 3 :[Not Detected]
SATA 4 :[Not Detected]

Storage Conguration

System Information

v02.58 (C)Copyright 1985-2009, American Megatrends, Inc.

Submenu 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 system Time.

Select Screen

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

Navigation keys

2.2.2 Menu bar

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

Main For changing the basic system conguration.

Advanced For changing the advanced system settings.

Power For changing the advanced power management (APM)

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.

conguration.

ASUS P5P41D 2-5

2.2.3 Navigation keys

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

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

2.2.4 Menu items

The highlighted item on the menu bar displays the specic items for that menu. For example,

selecting Main shows the Main menu items.
The other items (Advanced, Power, Boot, Tools, and Exit) on the menu bar have their

respective menu items.

2.2.5 Submenu items

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

2.2.6 Conguration elds

These elds show the values for the menu items. If an item is user- congurable, you can
change the value of the eld opposite the item. You cannot select an item that is not user­congurable.A congurable eld is enclosed in brackets, and is highlighted when selected. To
change the value of a eld, select it then press <Enter> to display a list of options. Refer to

2.2.7 Pop-up window.

2.2.7 Pop-up window

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

window with the conguration

options for that item.

2.2.8 Scroll bar

A scroll bar appears on the right
side of a menu screen when there

are items that do not t on the

screen. Press the <Up> / <Down>
arrow keys or <Page Up> /<Page

Main Advanced Power Boot Tools Exit

Suspend Mode [Auto]
ACPI 2.0 Support [Disabled]
ACPI APIC support [Enabled]

APM Conguration

Hardware Monitor

v02.58 (C)Copyright 1985-2009, American, American Megatrends, Inc.

BIOS SETUP UTILITY

Options

Disabled

Enabled

Pop-up window

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

a eld.

Use [+] or [-] to

congure system

Time.

Scroll bar

Select Screen

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

Down> keys to display the other
items on the screen.

2.2.9 General help

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

2-6 Chapter 2: BIOS information

2.3 Main menu

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

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

Main Advanced Power Boot Tools Exit

System Time [00:31:48]

System Date [Tue 04/21/2009]

Primary IDE Master :[Not Detected]
Primary IDE Slave :[Not Detected]
SATA 1 :[Not Detected]
SATA 2 :[Not Detected]
SATA 3 :[Not Detected]
SATA 4 :[Not Detected]

Storage Conguration

System Information

v02.58 (C)Copyright 1985-2009, 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

2.3.1 System Time [xx:xx:xx]

Allows you to set the system time.

2.3.2 System Date [Day xx/xx/xxxx]

Allows you to set the system date.

2.3.3 Primary IDE Master/Slave and SATA 1-4

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

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

LBA Mode, Block Mode, PIO Mode, Async DMA, Ultra DMA, and SMART Monitoring). These
values are not user-congurable. These items show Not Detected if no IDE/ Serial ATA
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]

This item does not appear if you select SATA 1/2/3/4 devices.

ASUS P5P41D 2-7

LBA/Large Mode [Auto]

Enables or disables the LBA mode. Setting to [Auto] enables the LBA mode if the device
supports this mode, and if the device was not previously formatted with LBA mode disabled.

Conguration options: [Disabled] [Auto]

Block (Multi-sector Transfer) M [Auto]

Enables or disables data multi-sectors transfers. When set to [Auto], the data transfer from
and to the device occurs multiple sectors at a time if the device supports multi-sector transfer
feature. When set to [Disabled], the data transfer from and to the device occurs one sector

at a time. Conguration options: [Disabled] [Auto]

PIO Mode [Auto]

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

DMA Mode [Auto]

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

SMART Monitoring [Auto]

Sets the Smart Monitoring, Analysis, and Reporting Technology.

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

32Bit Data Transfer [Enabled]

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

2.3.4 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.

ATA/IDE Conguration [Enhanced]

Allows you to set the ATA/IDE conguration. Conguration options: [Disabled] [Compatible]

[Enhanced]

The following item appears only when you set the ATA/IDE Conguration item to
[Enhanced].

Enhanced Mode Support On [S-ATA]

Conguration options: [S-ATA+P-ATA] [S-ATA] [P-ATA]

The following item appears only when you set the ATA/IDE Conguration item to
[Compitable].

Legacy IDE Channels [PATA Pri, SATA Sec]

Conguration options: [SATA Only] [PATA Pri, SATA Sec] [PATA Only]

IDE Detect Time Out (Sec) [35]

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

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

2-8 Chapter 2: BIOS information

2.3.5 System Information

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

automatically detects the items in this menu.

Bios Information

Displays the auto-detected BIOS information.

Processor

Displays the auto-detected CPU specication.

System Memory

Displays the auto-detected system memory.

2.4 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 Advanced Power Boot Tools Exit

JumperFree Conguration

CPU Conguration

Chipset

Onboard Devices Conguration
USB Conguration

PCIPnP

BIOS SETUP UTILITY

Adjust System
frequency/voltage.

2.4.1 JumperFree Conguration

The items in this menu allow you to adjust the system frequency/voltage.

AI Overclocking [Auto]

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

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

Manual - allows you to individually set overclocking parameters.

Auto - loads the optimal settings for the system.

Overclock Prole - loads overclocking proles with optimal parameters for stability

when overclocking.

ASUS P5P41D 2-9

The following items appear only when you set the AI Overclocking item to [Manual].

CPU 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 CPU 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.

FSB / CPU External Frequency Synchronization

Front Side Bus CPU External Frequency

FSB 1600 400 MHz

FSB 1333 333 MHz

FSB 1066 266 MHz

FSB 800 200 MHz

PCI Express Frequency [xxx]

Allows you to adjust the PCI Express frequency. The values range from 90 to 150.

The following item appears only when you set the AI Overclocking item to [Overclock
Prole].

Overclock Options [Overclock 5%]

Allows you to select the overclock options. Conguration options: [Overclock 5%]

[Overclock 10%] [Overclock 15%] [Overclock 20%] [Overclock 30%] [Test Mode]

DRAM Frequency [Auto]

Allows you to set the DDR2 operating frequency. Conguration options: [Auto]
[667 MHz] [800 MHz] [1067MHz]

• The conguration options vary with different CPUs.

• The following table shows the DRAM Frequency options that appear when the FSB
value is 1600, 1333, 1066, and 800.

FSB

Auto 667MHz 800MHz 960MHz 1000MHz 1067MHz 1100MHz 1200MHz

1600 v v v v v

1333 v v v v v

1066 v v v v

800 v v v

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

DRAM Frequency

Memory Voltage [Auto]

Allows you to adjust Memory Over voltage and each step is 0.01500V. Valid value is from

1.50000V to 2.44500V.

2-10 Chapter 2: BIOS information

NB Over Voltage [Auto]

Manually set Northbridge Chipset Voltage or set to Auto for safe mode. Press <+> / <-> to

adjust the value. Conguration options: [Auto] [1.125V] [1.175V] [1.225V] [1.275V]

SB 1.5V Voltage [1.5V]

Manually set Southbridge Chipset Voltage. Conguration options: [1.5V] [1.6V]

CPU VTT [1.2V]

Manually set the FSB Termination Voltage. Conguration options: [1.2V] [1.3V]

CPU Over Voltage [Auto]

Allows you to adjust the CPU over voltage. Conguration options: [Auto] [+50mV] [+100mV]

[+150mV]

Setting a very high voltage may damage the component permanently, and setting a very
low voltage may cause the system to become unstable.

Auto PSI [Enabled]

Allows you to eanable or disable the Auto PSI mode.

Conguration options: [Disabled] [Enabled]

2.4.2 CPU Conguration

The items in this menu show the CPU-related information that the BIOS automatically
detects.

Ratio CMOS Setting [Auto]

Sets the ratio between CPU core clock and the FSB frequency. Press <+> / <-> to adjust the
value.

If an invalid ratio is set in CMOS, then the actual and set values may differ.

C1E Support [Enabled]

Allows you to enable or disable C1E 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® Virtualization Tech [Enabled]

Enables or disables Intel® Virtualization Technology. Virtualization enhanced by Intel®

Virtualization Technology allows a platform to run multiple operating systems and applications
in independent partitons. With virtualization, one computer system can function as multiple
virtual systems. Conguration options: [Enabled] [Disabled]

CPU TM function [Enabled]

Enables or disables Intel® CPU Thermal Monitor (TM) function, a CPU overheating
protection function. When enabled, the CPU core frequency and voltage are reduced when

the CPU overheats. Conguration options: [Disabled] [Enabled]

ASUS P5P41D 2-11

Execute-Disable Bit Capability [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 item appears only when you installed an Intel® CPU that supports the
Enhanced Intel® SpeedStep® Technology (EIST).

Intel(R) SpeedStep(TM) Tech [Enabled]

Allows you to use the Enhanced Intel® SpeedStep® Technology. When set to [Enabled], you
can adjust the system power settings in the operating system to use the EIST feature. Set

this item to [Disabled] if you do not want to use the EIST. Conguration options: [Enabled]

[Disabled]

2.4.3 Chipset

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

North Bridge Conguration

Memory Remap Feature [Enabled]

Allows you to enabled 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]

Congure DRAM Timing by SPD [Enabled]

Allows you to enable or disable conguring the DRAM Timing by SPD.
Conguration options: [Enabled] [Disabled]

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]

South Bridge Conguration

Audio Controller [Enabled]

Allows you to set the audio controller. Conguration options: [Enabled] [Disabled]

Front Panel Type [HD Audio]

Allows you to select the front panel support type. If High Denition Audio Front Panel
used, please set HD Audio mode. Conguration options: [AC97] [HD Audio]

2-12 Chapter 2: BIOS information

2.4.4 Onboard Devices Conguration

Onboard Gigabit LAN [Enabled]

Allows you to enable or disable the onboard LAN controller.

Conguration options: [Enabled] [Disabled]

Onboard LAN Boot ROM [Disabled]

Allows you to enable or disable the boot ROM in the onboard LAN controller. This
item appears only when the Onboard Gigabit LAN item is set to [Enabled] or [Auto].

Conguration options: [Disabled] [Enabled]

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]

Parallel Port Address [378]

Allows you to select the Parallel Port base addresses. Conguration options: [Disabled] [378]

[278] [3BC]

Parallel Port Mode [ECP]

Allows you to select the Parallel Port mode.

Conguration options: [Normal] [Bi-Directional] [EPP] [ECP]

ECP Mode DMA Channel [DMA3]

Appears only when the Parallel Port Mode is set to [ECP]. This item allows you to set

the Parallel Port ECP DMA. Conguration options: [DMA0] [DMA1] [DMA3]

EPP Version [1.9]

Appears only when the Parallel Port Mode is set to [EPP].

Conguration options: [1.9] [1.7]

Parallel Port IRQ [IRQ7]

Allows you to select parallel port IRQ. Conguration options: [IRQ5] [IRQ7]

2.4.5 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.

The Module Version and USB Devices Enabled items show the auto-detected values. If no
USB device is detected, the item shows None.

USB Functions [Enabled]

Allows you to disable or enable the USB functions. Conguration options: [Disabled]

[Enabled]

USB 2.0 Controller [Enabled]

Allows you to enable or disable USB 2.0 controller.

Conguration options: [Enabled] [Disabled]

ASUS P5P41D 2-13

Legacy USB Support [Auto]

Allows you to enable or disable support for Legacy USB storage devices, including USB ash

drives and USB hard drives. Setting to [Auto] allows the system to detect the presence of
USB devices at startup. If detected, the USB controller legacy mode is enabled. If no USB

device is detected, the legacy USB support is disabled. Conguration options: [Disabled]

[Enabled] [Auto]

USB 2.0 Controller Mode [HiSpeed]

Allows you to congure the USB 2.0 controller in HiSpeed (480Mbps) or Full Speed
(12Mbps). Conguration options: [FullSpeed] [HiSpeed]

The following items may only appear when a USB storage device is plugged.

USB Mass Storage Device Conguration

USB Mass Storage Reset Delay [20 Sec]

Allows you to set the maximum time that the BIOS waits for the USB storage device to

initialize. Conguration options: [10 Sec] [20 Sec] [30 Sec] [40 Sec]

Emulation Type [Auto]

Allows you to set the emulation type. Conguration options: [Auto] [Floppy] [Forced FDD]

[Hard Disk] [CDROM]

2.4.6 PCI PnP

The PCI PnP menu items allow you to change the advanced settings for PCI/PnP devices.
The menu includes setting IRQ and DMA channel resources for either PCI/PnP or legacy ISA

devices, and setting the memory size block for legacy ISA devices.

Take caution when changing the settings of the PCI PnP menu items. Incorrect eld values

can cause the system to malfunction.

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]

2-14 Chapter 2: BIOS information

2.5 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 Advanced Power Boot Tools Exit

Suspend Mode [Auto]

ACPI 2.0 Support [Disabled]
ACPI APIC Support [Enabled]

APM Conguration

Hardware Monitor

BIOS SETUP UTILITY

Select the ACPI state
used for System
Suspend.

2.5.1 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]

[S1(POS) Only] - Enables the system to enter the ACPI S1 (Power on Suspend) sleep

state. In S1 sleep state, the system appears suspended and stays in a low power
mode. The system can be resumed at any time.
[S3 Only] - Enables the system to enter the ACPI S3 (Suspend to RAM) sleep state
(default). In S3 sleep state, the system appears to be off and consumes less power
than in the S1 state. When signaled by a wake-up device or event, the system resumes
to its working state exactly where it was left off.

[Auto] - Detected by OS.

2.5.2 ACPI 2.0 Support [Enabled]

Allows you to add more tables for Advanced Conguration and Power Interface (ACPI) 2.0
specications. Conguration options: [Disabled] [Enabled]

2.5.3 ACPI APIC Support [Enabled]

Allows you to enable or disable the Advanced Conguration and Power Interface (ACPI)
support in the Application-Specic Integrated Circuit (ASIC). When set to Enabled, the ACPI
APIC table pointer is included in the RSDT pointer list. Conguration options: [Disabled]

[Enabled]

2.5.4 APM Conguration

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, and RTC Alarm

Second appear with set values. Conguration options: [Disabled] [Enabled]

ASUS P5P41D 2-15

Power On By External Modem [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]

Power On By PCI (E) Devices [Disabled]

When set to [Enabled], this parameter allows you to wake the system through a PCI
Express/PCI card. This feature requires an ATX power supply that provides at least 1A on

the +5VSB lead. Conguration options: [Disabled] [Enabled]

Power On By PS/2 Keyboard [Disabled]

Allows you to use specic keys on the keyboard to turn on the system. This feature requires
an ATX power supply that provides at least 1A on the +5VSB lead. Conguration options:

[Disabled] [Space Bar] [Ctrl-Esc] [Power Key]

Power On By PS/2 Mouse [Disabled]

When set to [Enabled], this parameter allows you to use the PS/2 mouse to turn on the
system. This feature requires an ATX power supply that provides at least 1A on the +5VSB

lead. Conguration options: [Disabled] [Enabled]

2.5.5 Hardware Monitor

CPU Temperature [xxxºC/xxxºF] or [Ignored]

MB Temperature [xxxºC/xxxºF] or [Ignored]

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]

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. Select Ignored if you do not wish to display the detected speed.

CPU Q-Fan Control [Disabled]

Allows you to enable or disable the Q-Fan control. Conguration options: [Disabled]

[Enabled]

Chassis Fan Speed [xxxxRPM] or [Ignored]

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. Select Ignored if you do not wish to display the detected speed.

CPU Over Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage [xxxV] or [Ignored]

The onboard hardware monitor automatically detects the voltage output through the onboard
voltage regulators.

2-16 Chapter 2: BIOS information

2.6 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 Advanced Power Boot Tools Exit

Boot Settings

Boot Device Priority

Boot Settings Conguration

Security

2.6.1 Boot Device Priority

1st/2nd/3rd Boot Device

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: [Removable Dev.] [Hard Drive]
[ATAPI CD-ROM] [Disabled]

• To select the boot device suring system startup, press <F8> when ASUS Logo appears.

• To access Windows® OS in Safe Mode, do any of the following:

• Press <F5> when ASUS Logo appears.

• Press <F8> after POST.

2.6.2 Boot Settings Conguration

Quick Boot [Enabled]

Enabling this item allows the BIOS to skip some power on self tests (POST) while booting to
decrease the time needed to boot the system. When set to [Disabled], BIOS performs all the

POST items. Conguration options: [Disabled] [Enabled]

Full Screen Logo [Enabled]

This allows you to enable or disable the full screen logo display feature. Conguration

options: [Disabled] [Enabled]

BIOS SETUP UTILITY

Species the Boot

Device Priority
sequence.

A virtual drive (Drive
B:) may appear when you
set the CD-ROM drive as

the rst boot device.

Set this item to [Enabled] to use the ASUS MyLogo2� feature.

AddOn ROM Display Mode [Force BIOS]

Sets the display mode for option ROM. Conguration options: [Force BIOS]
[Keep Current]

Bootup Num-Lock [On]

Allows you to select the power-on state for the NumLock.

Conguration options: [Off] [On]

Wait For ‘F1’ If Error [Enabled]

When set to Enabled, the system waits for the F1 key to be pressed when error occurs.

Conguration options: [Disabled] [Enabled]

ASUS P5P41D 2-17

Hit ‘DEL’ Message Display [Enabled]

When set to [Enabled], the system displays the message Press DEL to run Setup during

POST. Conguration options: [Disabled] [Enabled]

2.6.3 Security

The Security menu items allow you to change the system security settings. Select an item
then press <Enter> to display the conguration options.

Change Supervisor Password

Select this item to set or change the supervisor password. The Supervisor Password item
on top of the screen shows the default Not Installed. After you set a password, this item
shows Installed.

To set a Supervisor Password:

1. Select the Change Supervisor Password item and press <Enter>.

2. On the password box, key in a password containing up to six letters, or numbers, or

both, then press <Enter>.

3. Conrm the password when prompted.

The message Password Installed appears after you successfully set your password.
To change the supervisor password, follow the same steps in setting a supervisor password.
To clear the supervisor password, select the Change Supervisor Password then press

<Enter> twice. The message Password uninstalled appears.

If you forget your BIOS password, you can clear it by erasing the CMOS Real Time Clock
(RTC) RAM. See section 1.9 Jumpers for information on how to erase the RTC RAM.

After you have set a supervisor password, the other items appear to allow you to change
other security settings.

User Access Level [Full Access]

This item allows you to select the access restriction to the Setup items.

Conguration options: [No Access] [View Only] [Limited] [Full Access]

[No Access] - prevents user access to the Setup utility.
[View Only] - allows access but does not allow change to any eld.
[Limited] - allows changes only to selected elds, such as Date and Time.
[Full Access] - allows viewing and changing all the elds in the Setup utility.

Change User Password

Select this item to set or change the user password. The User Password item on top of the
screen shows the default Not Installed. After you set a password, this item shows Installed.

To set a User Password:

1. Select the Change User Password item and press <Enter>.

2. On the password box, key in a password containing up to six letters, or numbers, or

both, then press <Enter>.

3. Conrm the password when prompted.

The message Password Installed appears after you set your password successfully.
To change the user password, follow the same steps in setting a user password.

2-18 Chapter 2: BIOS information

Clear User Password

Select this item to clear the user password.

Password Check [Setup]

When set to [Setup], BIOS checks for user password when accessing the Setup utility. When
set to [Always], BIOS checks for user password both when accessing Setup and booting the

system. Conguration options: [Setup] [Always]

2.7 Tools menu

The Tools menu items allow you to congure options for special functions. Select an item then

press <Enter> to display the sub-menu.

Main Advanced Power Boot Tools Exit

ASUS EZ Flash 2

Express Gate [Auto]
Enter OS Timer [10 Seconds]
Reset User Data [No]

AI NET 2

2.7.1 ASUS EZ Flash 2

Allows you to run ASUS EZ Flash 2. When you press <Enter>, a conrmation message
appears. Use the left/right arrow key to select between [Yes] or [No], then press <Enter> to

conrm your choice. Please see section 2.1.2 for details.

2.7.2 Express Gate [Auto]

Allows you to enable or disable the ASUS Express Gate feature. The ASUS Express Gate
feature is a unique instant-on environment that provides quick access to the Internet browser

and Skype. Conguration options: [Enabled] [Disabled] [Auto]

Enter OS Timer [10 Seconds]

Sets countdown duration that the system waits at the Express Gate’s rst screen

before starting Windows or other installed OS. Choose [Prompt User] to stay at the

rst screen of Express Gate for user action. Conguration options: [Prompt User] [1

second] [3 seconds] [5 seconds] [10 seconds] [15 seconds] [20 seconds] [30 seconds]

Reset User Data [No]

Allows you to clear Express Gate’s user data. Conguration options: [No] [Reset]

When setting this item to [Reset], ensure to save the setting to the BIOS so that the
user data will be cleared the next time you enter the Express Gate. User data includes

the Express Gate’s settings as well as any personal information stored by the web

browser (bookmarks, cookies, browsing history, etc.). This is useful in the rare case
where corrupt settings prevent the Express Gate environment from launching properly.

BIOS SETUP UTILITY

Press ENTER to run the
utility to select and
update BIOS.
This utility supports

1. FAT 12/16/32 (r/w)

2. NTFS (read only)

3. CD-DISC (read only)

The rst time wizard will run again when you enter the Express Gate environment after

clearing its settings.

ASUS P5P41D 2-19

2.7.3 AI NET 2

Check Atheros LAN cable [Disabled]

Enables or disables checking of the Atheros LAN cable during the Power-On Self-Test

(POST). Conguration options: [Disabled] [Enabled]

2.8 Exit menu

The Exit menu items allow you to load the optimal or failsafe default values for the BIOS
items, and save or discard your changes to the BIOS items.

Main Advanced Power Boot Tools Exit

Exit Options

Exit & Save Changes

Exit & Discard Changes
Discard Changes

Load Setup Defaults

Pressing <Esc> does not immediately exit this menu. Select one of the options from this
menu or <F10> from the legend bar to exit.

Exit & Save Changes

Once you are nished making your selections, choose this option from the Exit menu to

ensure the values you selected are saved to the CMOS RAM. An onboard backup battery
sustains the CMOS RAM so it stays on even when the PC is turned off. When you select this

option, a conrmation window appears. Select OK to save changes and exit.

Exit & Discard Changes

Select this option only if you do not want to save the changes that you made to the Setup

program. If you made changes to elds other than System Date, System Time, and
Password, the BIOS asks for a conrmation before exiting.

Discard Changes

This option allows you to discard the selections you made and restore the previously saved
values. After selecting this option, a conrmation appears. Select OK to discard any changes
and load the previously saved values.

Load Setup Defaults

This option allows you to load the default values for each of the parameters on the Setup
menus. When you select this option or if you press <F5>, a conrmation window appears.
Select OK to load default values. Select Exit & Save Changes or make other changes
before saving the values to the non-volatile RAM.

BIOS SETUP UTILITY

Exit system setup
after saving the
cahnges.

F10 key can be used
for this operation.

2-20 Chapter 2: BIOS information