Asus P5G41C-M LX User Manual

P5G41C-M LX

Motherboard

E5284

First Edition V1 January 2010

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.

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Offer to Provide Source Code of Certain Software

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You may obtain the complete corresponding source code (as dened in the GPL) for the GPL Software,

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In your request please provide the name, model number and version, as stated in the About Box of the product for which you wish to obtain the corresponding source code and your contact details so that we can coordinate the terms and cost of shipment with you.

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This offer is valid to anyone in receipt of this information.

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we would be much obliged if you give us a notication to the email address gpl@asus.com, stating the

product and describing the problem (please do NOT send large attachments such as source code archives etc to this email address).

Contents

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

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

About this guide ........................................................................................ vii

P5G41C-M LX 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 .......................................................... 1-19

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

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

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

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

1.8.3 PCI slots ........................................................................ 1-20

1.8.4 PCI Express x1 slot ....................................................... 1-20

1.8.5 PCI Express x16 slot ..................................................... 1-20

1.9 Jumpers ...................................................................................... 1-21

1.10 Connectors ................................................................................. 1-23

1.10.1 Rear panel connectors .................................................. 1-23

1.10.2 Internal connectors ....................................................... 1-24

iii

Contents

1.11 Software support ........................................................................ 1-30

1.11.1 Installing an operating system ...................................... 1-30

1.11.2 Support DVD information .............................................. 1-30

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 ............................................................ 2-2

2.1.3 ASUS CrashFree BIOS ................................................... 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, SATA1~4 .............................. 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 ........................................................ 2-14

2.4.6 PCI PnP ........................................................................ 2-15

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

Contents

2.5.4 Anti Surge Support ....................................................... 2-15

2.5.5 APM Conguration ........................................................ 2-16

2.5.6 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 ................................................................................. 2-20

2.7.1 ASUS EZ Flash 2 .......................................................... 2-20

2.7.2 Express Gate ................................................................ 2-20

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

2.8 Exit menu .................................................................................... 2-21

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.

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.

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.

•

Place the product on a stable surface.

•

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

technician or your retailer.

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.

vii

Conventions used in this guide

To ensure 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.

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.

Typography

Bold text Indicates a menu or an item to select.

Italics

Used to emphasize a word or a phrase.

<Key> Keys enclosed in the less-than and greater-than sign means that you must press the enclosed key. Example: <Enter> means that you must press the Enter or Return key.

<Key1>+<Key2>+<Key3> If you must press two or more keys simultaneously, the key names are linked with a plus sign (+). Example: <Ctrl>+<Alt>+<D>

viii

P5G41C-M LX specications summary

CPU LGA775 socket for Intel® Core™2 Quad / Core™2 Extreme

Chipset Northbridge: Intel® G41

Front Side Bus 1333/1066/800 MHz

Memory Dual channel memory architecture

Graphics Integrated Intel® GMA X4500 GPU

Expansion slots 1 x PCIe x16 slot

Storage 1 x Ultra DMA 100/66/33 connector

LAN PCIe Gigabit LAN

Audio VT1708S High Denition Audio 8-channel CODEC

USB Supports up to 8 USB 2.0/1.1 ports (4 ports at mid-board,

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

Southbridge: Intel® ICH7

- 2 x 240-pin DIMM sockets support unbuffered non-ECC 1333(O.C.)/1066/800 MHz DDR3 memory modules

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

- Supports up to 8GB system memory * Refer to www.asus.com for the latest Memory QVL (Qualied Vendors Lists). ** DDR2 and DDR3 memory modules cannot be used

simultaneously. Use DDR3 memory modules on the black slots and DDR2 memory modules on the blue slots.

** When you install a total memory of 4GB 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 operating system.

Maximum shared memory of 1GB Supports RGB with max. resolution of 2048 x 1536 (@ 75Hz) Supports Microsoft® DirectX® 10

1 x PCIe x1 slot 2 x PCI slots

4 x Serial ATA 3Gb/s connectors

* Use the chassis with HD audio module in the front panel to support 8-channel audio output. Supports Jack-detection and Multi-Streaming technologies Supports S/PDIF Out interface

4 ports at the back panel)

(continued on the next page)

P5G41C-M LX specications summary

ASUS exclusive overclocking features

ASUS unique features

Back panel I/O ports 1 x PS/2 keyboard port

Internal connectors 2 x USB 2.0/1.1 connectors support additional

BIOS 8Mb Flash ROM, AMI BIOS, PnP, DMI 2.0, WfM 2.0, ACPI 2.0a,

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

Accessories 1 x Ultra DMA 133/100/66 cable

Support DVD Drivers

Form factor uATX form factor: 9.6 in x 8.5 in (24.4 cm x 21.6 cm)

* Specications are subject to change without notice.

SFS (Stepless Frequency Selection):

- FSB tuning from 200MHz to 800MHz at 1MHz increment Overclocking Protection:

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

ASUS CrashFree BIOS 3 ASUS AI NET 2 ASUS Q-Fan ASUS EZ Flash 2 ASUS MyLogo 2 ASUS Anti-Surge Protection ASUS Turbo Key ASUS Express Gate ASUS EPU-L

1 x PS/2 mouse port 1 x LPT port 1 x COM port 1 x VGA port 1 x LAN (RJ-45) port 4 x USB 2.0/1.1 ports 3 x audio jacks

4 USB 2.0/1.1 ports 1 x IDE connector 4 x Serial ATA connectors 1 x Front panel audio connector 1 x System panel connector 1 x S/PDIF Out connector 1 x Internal speaker connector 1 x CPU fan connector 1 x Chassis fan connector 1 x 24-pin EATX power connector 1 x 4-pin ATX 12V power connector

SM BIOS 2.5

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

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

Chapter 1

Product introduction

1.1 Welcome!

Thank you for buying an ASUS® P5G41C-M LX 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 P5G41C-M LX motherboard

Cables 2 x Serial ATA cables

1 x Ultra DMA 133/100/66 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 P5G41C-M LX 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 DDR3 1333 (overclocking)/1066/800 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.

Dual channel DDR3 1333 (O.C.)/1066/800 support

This motherboard supports DDR3 memory that features data transfer

rates of 1333 (O.C.)/1066/800 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.

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.

ASUS Anti-Surge Protection

This special design prevents expensive devices and the motherboard from damage caused by power surges from switching power supply (PSU).

1-2 Chapter 1: Product introduction

ASUS Express Gate

Express Gate is an ASUS exclusive OS, which lets you instantly access the Internet and key applications before entering the Windows® OS.

• ASUS Express Gate supports installation on SATA HDDs, USB HDDs and ash

drives with at least 1.2GB free disk space. When installing it on USB HDDs or

ash drives, connect the drives to the motherboard USB port before turning on the

computer.

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

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

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 P5G41C-M LX 1-3

1.4 Before you proceed

SB_PWR

Standby Power Powered Off

OFF

P5G41C-M LX

P5G41C-M LX Onboard LED

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

P5G41C-M LX

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 P5G41C-M LX 1-5

1.5.3 Motherboard layout

P5G41C-M LX

PCIEX16

PCIEX1_1

PCI2

PCI1

PRI_IDE

USB78

USB56

F_PANEL

AAFP

ICS

9LRS954

ATX12V

EATXPWR

CPU_FAN

Intel

G41

Lithium Cell

CMOS Power

Super

I/O

AUDIO

VIA

VT1708S

RTL

8112L

KBMS

8Mb

BIOS

SB_PWR

CLRTC

USBPW1-4

USBPW5-8

SPEAKER

SPDOF_OUT

KBPWR

21.6cm(8.5in)

24.4cm(9.6in)

LGA775

Intel

ICH7

DDR3 DIMM_A1 (64bit, 240-pin module)

DDR2 DIMM_A1 (64bit, 240-pin module)

DDR3 DIMM_B1 (64bit, 240-pin module)

DDR2 DIMM_B1 (64bit, 240-pin module)

LAN1_USB12

USB34

SATA1 SATA2 SATA3 SATA4

CHA_FAN

VGA

LPT

COM

1 2 654 5

10 91214 1315 11 3

1.5.4 Layout contents

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

1. Keyboard power (3-pin KBPWR) 1-22 9. System panel connector (10-1 pin F_PANEL) 1-29

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

3. USB device wake-up (3-pin USBPW1-4, 3-pin

4. Intel LGA775 CPU socket 1-7 12. Speaker connector (4-pin SPEAKER) 1-29

5. CPU and chassis fan connectors

6. DIMM slots 1-12 14. Front panel audio connector (10-1 pin AAFP) 1-24

7. IDE connector (40-1 pin PRI_IDE) 1-25 15. Onboard LED (SB_PWR) 1-4

8. Clear RTC RAM (3-pin CLRTC) 1-21

USBPW5-8)

(4-pin CPU_FAN, 3-pin CHA_FAN)

1-6 Chapter 1: Product introduction

1-26 10. Serial ATA connectors (7-pin SATA1-4) 1-27

1-22 11. USB connectors (10-1 pin USB56, USB78) 1-27

1-28 13. Digital audio connector (4-1 pin SPDIF_OUT) 1-28

1.6 Central Processing Unit (CPU)

P5G41C-M LX

P5G41C-M LX CPU socket 775

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 P5G41C-M LX 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

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

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.

ASUS P5G41C-M LX 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.

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.

1-10 Chapter 1: Product introduction

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

P5G41C-M LX

P5G41C-M LX CPU fan connector

CPU_FAN

CPU FAN PWM

CPU FAN IN

CPU FAN PWR

GND

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.

ASUS P5G41C-M LX 1-11

P5G41C-M LX

P5G41C-M LX 240-pin DIMM sockets

DDR3_B1

DDR2_B1

DDR3_A1

DDR2_A1

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 two Double Data Rate 3 (DDR3) and two Double Data Rate 3

(DDR2) Dual Inline Memory Modules (DIMM) sockets. The gure illustrates the location of the

DIMM sockets:

Channel Sockets

Channel A DDR3_A1 and DDR2_A1

Channel B DDR3_B1 and DDR2_B1

1-12 Chapter 1: Product introduction

1.7.2 Memory congurations

You may install 512MB, 1GB, 2GB, and 4GB unbuffered non-ECC DDR3 DIMMS into the black sockets or 512MB, 1GB, 2GB, and 4GB unbuffered non-ECC DDR2 DIMMS into the blue sockets

• DO NOT use DDR2 and DDR3 memory modules simultaneously.

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

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

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

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

- Install a 64-bit Windows® 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.

• 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.

P5G41C-M LX Motherboard Qualied Vendors Lists (QVL)

DDR3-1066 MHz capability

DIMM

1.35V(low voltage)

upport (Optional)

A* B*

• •

Vendor Part No. Size

Crucial CT12864BA1067.8FF 1024MB SS Micron 9GF22D9KPT 7 - • • Crucial CT25664BA1067.16FF 2048MB DS Micron 9HF22D9KPT 7 - • •

ELPIDA EBJ10UE8EDF0-AE-F 1024MB SS ELPIDA J1108EDSE-DJ-F -

ELPIDA EBJ51UD8BAFA-AC-E 512MB SS Elpida J5308BASE-AC-E - - • • ELPIDA EBJ51UD8BAFA-AE-E 512MB SS Elpida J5308BASE-AC-E - - • • ELPIDA EBJ11UD8BAFA-AE-E 1024MB DS Elpida J5308BASE-AC-E - - • •

ELPIDA EBJ21UE8EDF0-AE-F 2048MB DS ELPIDA J1108EDSE-DJ-F -

KINGSTON KVR1066D3N7/1G 1024MB SS Kingston D1288JEKAPGA7U 7 1.5V • • KINGSTON KVR1066D3N7/2G 2048MB DS Kingston D1288JEKAPGA7U 7 1.5V • • Micron MT8JTF12864AZ-1G1F1 1024MB SS Micron 9GF22D9KPT 7 - • • Micron MT16JTF25664AZ-1G1F1 2048MB DS Micron 9HF22D9KPT 7 - • •

SAMSUNG M378B2873EH1-CF8 1024MB SS SAMSUNG

SAMSUNG M378B5273BH1-CF8 4096MB DS SAMSUNG 846 K4B2G0846B-HCF8 - - • • Elixir M2Y2G64CB8HC5N-BE 2048MB DS Elixir N2CB1G80CN-BE - - • • Elixir M2Y2G64CBHA9N-BE 2048MB DS - - 7-7-7-20 - • • Elixir M2Y2G64CBHC9N-BE 2048MB DS Elixir - - - • • Kingtiger 2GB DIMM PC3-8500 2048MB DS Hynix H5TQ1G83AFP G7C - - • •

SS/

Chip Brand Chip NO. Timing Voltage

SEC 901 HCF8 K4B1G0846E

- - • •

ASUS P5G41C-M LX 1-13

DDR3-1333(O.C.) MHz capability

1.35V(low voltage)

1.3V(low voltage)

1.65V(low voltage)

DIMM socket support (Optional)

A* B*

• •

Vendor Part No. Size

A-Data AD31333001GOU 1024MB SS A-Data AD30908C8D-151C E0906 - - • •

A-Data AD31333G001GOU 3072MB(Kit of 3) SS - - 8-8-8-24 1.65-1.85V • •

A-Data AD31333002GOU 2048MB DS A-Data AD30908C8D-151C E0903 - - • •

A-Data AD31333G002GMU 2048MB DS - - 8-8-8-24 1.65-1.85V • •

Apacer 78.A1GC6.9L1 2048MB DS APACER AM5D5808DEWSBG - - • •

CORSAIR CM3X1024-1333C9DHX 1024MB SS - - 9-9-9-24 1.60V • •

CORSAIR CM3X1024-1333C9 1024MB SS - - - - • •

CORSAIR TR3X3G1333C9 G 3072MB(Kit of 3) SS - - 9-9-9-24 1.50V • •

CORSAIR TR3X3G1333C9 3072MB(Kit of 3) SS - - 9 1.5V • •

CORSAIR CM3X1024-1333C9DHX 1024MB DS Corsair - - - • •

CORSAIR CM3X2048-1333C9DHX 2048MB DS - - - - • •

CORSAIR TW3X4G1333C9 G 4096MB(Kit of 2) DS - - 9-9-9-24 1.50V • •

Crucial CT12864BA1339.8FF 1024MB SS Micron 9FF22D9KPT 9 - • •

Crucial BL12864TA1336.8SFB1 2048MB(Kit of 2) SS - - 6-6-6-20 1.8V • •

Crucial CT25664BA1339.16FF 2048MB DS Micron 9KF27D9KPT 9 - • •

Crucial BL25664ABA1336.16SFB1 4096MB(Kit of 2) DS - - 6-6-6-20 1.8V • •

Crucial BL25664BA1336.16SFB1 4096MB(Kit of 2) DS - - 6-6-6-20 1.8V • •

BL25664BN1337.16FF

Crucial

(XMP)

ELPIDA EBJ10UE8EDF0-DJ-F 1024MB SS ELPIDA J1108EDSE-DJ-F -

ELPIDA EBJ21UE8EDF0-DJ-F 2048MB DS ELPIDA J1108EDSE-DJ-F -

G.SKILL F3-10600CL8D-2GBHK 1024MB SS G.SKILL - - - • •

G.SKILL F3-10600CL9D-2GBPK 1024MB SS G.SKILL - - - • •

G.SKILL F3-10666CL7T-3GBPK 3072MB(Kit of 3) SS - - 7-7-7-18 1.5~1.6V • •

G.SKILL F3-10666CL9T-3GBNQ 3072MB(Kit of 3) SS - - 9-9-9-24 1.5~1.6V • •

G.SKILL F3-10600CL7D-2GBPI(XMP) 1024MB DS G.SKILL - - - • •

G.SKILL F3-10600CL9D-2GBNQ 1024MB DS G.SKILL - - - • •

F3-10666CL8D-

G.SKILL

4GBECO(XMP)

F3-10666CL8D-

G.SKILL

4GBHK(XMP)

F3-10666CL7T-

G.SKILL

6GBPK(XMP)

G.SKILL F3-10666CL9T-6GBNQ 6144MB(Kit of 3) DS - - 9-9-9-24 1.5V~1.6V • •

GEIL DDR3-1333 CL9-9-9-24 1024MB SS - - 9 - • •

GEIL GV34GB1333C7DC 2048MB DS - - 7-7-7-24 1.5V • •

GEIL GG34GB1333C9DC 4096MB(Kit of 2) DS GEIL GL1L128M88BA12N 9-9-9-24

GEIL DDR3-1333 CL9-9-9-24 6144MB(Kit of 3) DS - - 9 1.5V • •

Kingmax FLFD45F-B8MF9 1024MB SS Micron 8HD22D9JNM - - • •

Kingmax FLFD45F-B8MH9 MAES 1024MB SS Micron 9CF22D9KPT - - • •

Kingmax FLFE85F-B8MF9 2048MB DS Micron 8HD22D9JNM - - • •

Kingmax FLFE85F-B8MH9 MEES 2048MB DS Micron 9GF27D9KPT - - • •

KINGSTON KVR1333D3N9/2G 2048MB DS Qimonda IDSH1G-03A1F1C-13H - 1.5V • •

Micron MT8JTF12864AZ-1G4F1 1024MB SS Micron 9FF22D9KPT 9 - • •

Micron MT18JTF25664AZ-1G4F1 2048MB DS Micron 9KF27D9KPT 9 - • •

OCZ OCZ3P13332GK 2048MB(Kit of 2) SS - - 7-7-7-20 1.8V • •

OCZ OCZ3X1333LV3GK(XMP) 3072MB(Kit of 3) SS - - - 1.6V • •

OCZ OCZ3G13334GK 4096MB(Kit of 2) DS - - - 1.7V • •

OCZ OCZ3G1333LV4GK 4096MB(Kit of 2) DS - - 9-9-9-20

6144MB(Kit of 3) DS - - 7-7-7-24 1.65V • •

4096MB(Kit of 2) DS - - 8-8-8-24

4096MB(Kit of 2) DS - - 8-8-8-21 1.5-1.6V • •

6144MB(Kit of 3) DS - - 7-7-7-18 1.5~1.6V • •

SS/DSChip

Brand

Chip NO. Timing Voltage

continued on the next page

1-14 Chapter 1: Product introduction

DDR3-1333(O.C.) MHz capability

1.65V(low voltage)

DIMM socket support (Optional)

A* B*

• •

Vendor Part No. Size

OCZ OCZ3P13334GK 4096MB(Kit of 2) DS - - 7-7-7-20 1.8V • •

OCZ OCZ3P1333LV4GK 4096MB(Kit of 2) DS - - 7-7-7-20

OCZ OCZ3P1333LV4GK 4096MB(Kit of 2) DS - - 7-7-7-20 1.65V • •

OCZ OCZ3RPX1333EB4GK 4096MB(Kit of 2) DS - - 6-5-5-20 1.85V • •

OCZ OCZ3X13334GK(XMP) 4096MB(Kit of 2) DS - - 7-7-7-20 1.75V • •

OCZ OCZ3G1333LV6GK 6144MB(Kit of 3) DS - - 9-9-9-20 1.65V • •

OCZ OCZ3P1333LV6GK 6144MB(Kit of 3) DS - - 7-7-7-20 1.65V • •

OCZ OCZ3X1333LV6GK(XMP) 6144MB(Kit of 3) DS - - 8-8-8-20 1.60V • •

PSC AL7F8G73D-DG1 1024MB SS PSC A3P1GF3DGF928M9B05 - - • •

PSC AL8F8G73D-DG1 2048MB DS PSC A3P1GF3DGF928M9B05 - - • •

SAMSUNG M378B2873DZ1-CH9 1024MB SS Samsung K4B1G0846D-HCH9 - - • •

SAMSUNG M378B2873DZ1-CH9 1024MB SS SAMSUNG

SAMSUNG M378B2873EH1-CH9 1024MB SS Samsung

SAMSUNG M378B5673DZ1-CH9 2048MB DS Samsung K4B1G0846D-HCH9 - - • •

SAMSUNG M378B5673EH1-CH9 2048MB DS Samsung

Super Talent W1333X2GB8(XMP) 1024MB SS - - - - • •

Transcend TS128MLK64V3U 1024MB SS -

Transcend TS256MLK64V3U 2048MB DS Micron 9GF27D9KPT - - • •

Transcend TS256MLK64V3U 2048MB DS - SEC816HCH9K4B1G0846D - - • •

ASINT SLY3128M8-EDJ 1024MB SS ASINT DDRII1208-DJ 0844 - - • •

ASINT SLY3128M8-EDJE 1024MB SS ELPIDA J1108BASE-DJ-E - - • •

ASINT SLY3128M8-EDJ 2048MB DS ASINT DDRII1208-DJ 0844 - - • •

ASINT SLZ3128M8-EDJE 2048MB DS ELPIDA J1108BASE-DJ-E - - • •

BUFFALO FSX1333D3G-K2G 1024MB SS - - 7-7-7-20 - • •

BUFFALO FSX1333D3G-2G 2048MB DS - - 7-7-7-20 - • •

PC3-10600 DDR3-1333

Century

9-9-9

PC3-10600 DDR3-1333

Century

9-9-9

Elixir M2Y2G64CB8HA9N-CG 2048MB DS - - 7-7-7-20 - • •

Elixir M2Y2G64CB8HC9N-CG 2048MB DS Elixir - - - • •

Kingtiger 2GB DIMM PC3-10666 2048MB DS Samsung

Kingtiger KTG2G1333PG3 2048MB DS - - - - • •

PATRIOT PSD31G13332H 1024MB DS - - 9 - • •

PATRIOT PSD31G13332 1024MB DS Patriot PM64M8D38U-15 - - • •

PATRIOT PSD32G13332H 2048MB DS - - - - • •

PATRIOT PDC34G1333ELK 4096MB(Kit of 2) DS - - 9-9-9-24 1.5V • •

SILICON

SP001GBLTU133S01 1024MB SS NANYA NT5CB128M8AN-CG 9 - • •

POWER

SILICON

SP001GBLTU133S02 1024MB SS elixir N2CB1680AN-C6 9 - • •

POWER

SILICON

SP002GBLTU133S02 2048MB DS elixir N2CB1680AN-C6 9 - • •

POWER

TAKEMS TMS1GB364D081-107EY 1024MB SS - - 7-7-7-20 1.5V • •

TAKEMS TMS1GB364D081-138EY 1024MB SS - - 8-8-8-24 1.5V • •

TAKEMS TMS2GB364D081-107EY 2048MB DS - - 7-7-7-20 1.5V • •

TAKEMS TMS2GB364D081-138EY 2048MB DS - - 8-8-8-24 1.5V • •

TAKEMS TMS2GB364D082-138EW 2048MB DS - - 8-8-8-24 1.5V • •

1024MB SS Micron 8FD22D9JNM - - • •

2048MB DS Micron 8DD22D9JNM - - • •

SS/DSChip

Brand

Chip NO. Timing Voltage

SEC 846 HCH9 K4B1G08460

SEC 913 HCH9 K4B1G0846E

SEC 813HCH9 K4B1G0846D

SEC 904 HCH9 K4B1G0846D

- - • •

ASUS P5G41C-M LX 1-15

DDR2-667 MHz capability

Vendor Part No. Size

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

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

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

GEIL GX21GB5300SX 1024MB DS GEIL - 3 - • •

GEIL GX22GB5300LX 2048MB DS GEIL - 5 - • •

GEIL GX24GB5300LDC 2048MB DS GEIL - 5 - • •

KINGSTON KVR667D2N5/1G(low prole) 1024MB SS Elpida E1108AFSE-8E-F 5 1.8V • •

KINGSTON KVR667D2N5/2G(low prole) 2048MB DS Elpida E1108AFBG-8E-F 5 1.8V • •

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

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

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/

Chip Brand Chip NO. Timing Voltage

Heat-Sink Package SN:8151030036559

5-5-5-15 - • •

DIMM socket support (Optional)

A* B*

DDR2-800 MHz capability

Vendor Part No. Size

A-Data AD2800E001GOU 2048MB(Kit of 2) SS - - 4-4-4-12 2.0~2.1V • •

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

A-Data AD2800002GMU 2048MB DS Hynix - - - • •

A-Data AD2800E002GOU 4096MB(Kit of 2) DS - - 4-4-4-12 1.9~2.1V • •

Apacer 78.01GA0.9L5 1024MB SS APACER AM4B5808FEWS8E - - • •

Apacer 78.A1GA0.9L4 2048MB DS APACER AM4B5808FEWS8E - - • •

CORSAIR XMS2-6400 1024MB DS Corsair - 4 - • •

CORSAIR XMS2-6400 1024MB DS Corsair - 5 - • •

CORSAIR CM2X2048-6400C5DHX 4096MB(Kit of 2) DS - - 5 - • •

CORSAIR CM2X2048-6400C5 4096MB(Kit of 2) DS - - 5 - • •

Crucial BL12864AL80A.8FE5(EPP) 2048MB(kit of 2) SS - - 4-4-4-12 - • •

Crucial BL25664AL80A.16FE5(EPP) 4096MB(kit of 2) DS - - 4-4-4-12 - • •

Crucial BL25664AR80A.16FE5(EPP) 4096MB(kit of 2) DS - - 4-4-4-12 - • •

G.SKILL F2-6400PHU2-2GBNR 1024MB SS - - 5-5-5-15 1.9-2.0V • •

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

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

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

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

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

G.SKILL F2-6400CL6D-4GBMQ 4096MB(Kit of 2) DS - - 6-6-6-18 1.8-1.9V • •

G.SKILL F2-6400CL6Q-16GMQ 4096MB DS - - 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 - 4 - • •

GEIL GE22GB800C5DC 1024MB DS GEIL - 5 - • •

GEIL GE24GB800C4QC 1024MB DS GEIL - 4 - • •

SS/

Chip Brand Chip NO. Timing Voltage

Heat-Sink Package SN:8151030036642

5-5-5-15 - • •

DIMM socket support (Optional)

A* B*

continued on the next page

1-16 Chapter 1: Product introduction

DDR2-800 MHz capability

Vendor Part No. Size

GEIL GE24GB800C5QC 1024MB DS GEIL - 5 - • •

GEIL GX22GB6400DC 1024MB DS GEIL - 5 1.8V • •

GEIL GX22GB6400UDC 1024MB DS GEIL - 4 - • •

GEIL GB24GB6400C4DC 2048MB DS GEIL - 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 - 4 - • •

GEIL GE24GB800C5DC 2048MB DS GEIL - 5 - • •

GEIL GE28GB800C4QC 2048MB DS GEIL - 4 - • •

GEIL GE28GB800C5QC 2048MB DS GEIL - 5 - • •

GEIL GX22GB6400C4USC 2048MB DS GEIL - 4 - • •

GEIL GX22GB6400LX 2048MB DS GEIL - 5 - • •

GEIL GX24GB6400DC 2048MB DS GEIL - 5 - • •

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

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

KINGSTON KVR800D2N5/1G(low prole) 1024MB SS Elpida E1108AFSE-8E-F 5 1.8V • •

KINGSTON KVR800D2N6/1G(low prole) 1024MB SS Elpida E1108AFBG-8E-F 6 1.8V • •

KINGSTON KHX6400D2K2/2G 2048MB(Kit of 2) DS - - 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 • •

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

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

OCZ OCZ2RPR8002GK 1024MB DS OCZ - 4-4-4-15 2.1V • •

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

OCZ OCZ2SE8002GK 2048MB(Kit of 2) DS - - 5-5-5-15 1.8V • •

OCZ OCZ2F8004GK(EPP) 2048MB DS - - 5-4-4-18 2.1V • •

OCZ OCZ2P8004GK 4096MB(Kit of 2) DS - - 5-4-4-15 2.1v • •

OCZ OCZ2VU8004GK 4096MB(Kit of 2) DS - - 5-6-6-18 1.8V • •

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

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

SAMSUNG M378T6553GZS-CF7 512MB SS Qimonda K4T51083QG-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 Talent T800UB1GC4 1024MB DS Super Talent - 4 1.8V • •

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

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

V-Data M2GVD6G3H3160Q1E52 512MB SS V-Data VD29608A8A-25EG20813 - - • •

V-Data M2XSSKG3147C1L1C5Z 1024MB DS Samsung K4T51083QE - - • •

V-Data M2XHYKH3J47CC01E5Z 2048MB DS Hynix

SS/

Chip Brand Chip NO. Timing Voltage

H5PS1G83EFRS6C 852AK

- - • •

DIMM socket support (Optional)

A* B*

ASUS P5G41C-M LX 1-17

DDR2-1066 (O.C.) MHz capability

Vendor Part No. Size

A-Data AD21066E001GOU 1024MB SS - Heat-Sink Package 5-5-5-15 - • •

A-data AD21066E002GOU 2048MB DS - - 5-5-5-15 2.1V-2.3V • •

TWIN2X4096-

CORSAIR

8500C5D G

TWIN2X4096-

CORSAIR

8500C7 G

Crucial BL12864AA1065.8FE5 1024MB SS - - - - • •

G.SKILL F2-8500CL5S-1GBPK 1024MB DS - - 5-5-5-15 - • •

G.SKILL F2-8500CL5D-2GBPK 2048MB(kit of 2) DS - - 5-5-5-15 - • •

F2-8500CL5D-

G.SKILL

4GBPI-B

G.SKILL F2-8500CL5D-4GBPK 4096MB(kit of 2) DS - - 5-5-5-15 - • •

GEIL GB22GB8500C5DC 1024MB SS GEIL GL2L128M88BA18BW 5 - • •

GEIL GB24GB8500C5QC 1024MB SS GEIL GL2L128M88BA25AB 5 - • •

GEIL GE22GB1066C5DC 1024MB SS GEIL - 5 - • •

GEIL GE24GB1066C5QC 1024MB SS GEIL - 5 - • •

GEIL GB24GB8500C5DC 2048MB DS GEIL GL2L128M88BA25AB 5 - • •

GEIL GE24GB1066C5DC 2048MB DS GEIL - 5 - • •

GEIL GX24GB8500C5UDC 4096MB(kit of 2) DS - - 5 - • •

KLED48F-B8KU6-

Kingmax

NGES

KLEE88F-B8KU6-

Kingmax

NNAS

KINGSTON KHX8500D2/1G 1024MB SS - Heat-Sink Package - - • •

KINGSTON KHX8500D2K2/2G 1024MB DS - - - 2.2V • •

KINGSTON KHX8500D2K2/4G 2048MB DS - - 5-5-5-15 2.2V • •

OCZ OCZ2N10662GK(EPP) 2048MB(kit of 2) DS - - 5-5-5-15 21.V •

OCZ OCZ2F10664GK 4096MB(kit of 2) DS - - 6-7-7-20 2.2V • •

OCZ OCZ2P10664GK 4096MB(kit of 2) DS - - - 2.2V • •

PSC AL8E8G73F-AE1 2048MB DS PSC

Transcend TX1066QLU-2GK 2048MB(kit of 2) SS - - 5 - • •

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

4096MB(kit of 2) DS - - 5-5-5-15 2.10V • •

4096MB(kit of 2) DS - - 7-7-7-20 2.00V • •

4096MB(kit of 2) DS - - 5-5-5-15 2.0-2.1V • •

1024MB SS Kingmax KKB8FNUXF-DXX-18A 6-6-6-24 1.9V • •

2048MB DS Kingmax KKB8FNUXF-DXX-18A 6-6-6-24 1.9V • •

SS/DSChip

Brand

Chip NO. Timing Voltage

A3R1GE3FGF907MAT0FTAIWANG8E

5-5-5-12 - • •

DIMM socket support (Optional)

A* B*

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 DDR2 modules inserted into both the blue slots or one pair

of DDR3 modules into both the black slots as one pair of Dual-channel memory

conguration.

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

1-18 Chapter 1: Product introduction

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 DIMM socket.

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

DIMM notch

Unlocked retaining clip

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

a socket in the wrong direction to avoid damaging the DIMM.

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

Locked Retaining Clip

1.7.4 Removing a DIMM

To remove a DIMM:

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

Support the DIMM lightly with

your ngers when pressing the

retaining clips. The DIMM might

get damaged when it ips out with

extra force.

2. Remove the DIMM from the socket.

DIMM slot key

DIMM notch

ASUS P5G41C-M LX 1-19

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 slot

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.

1-20 Chapter 1: Product introduction

1.9 Jumpers

P5G41C-M LX

P5G41C-M LX Clear RTC RAM

1 2

2 3

Normal

(Default)

Clear RTC

CLRTC

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 clearing the CMOS, 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.

ASUS P5G41C-M LX 1-21

2. Keyboard power (3-pin KBPWR)

P5G41C-M LX

P5G41C-M LX Keyboard Power Setting

2 3

+5V

(Default)

+5VSB

KBPWR

P5G41C-M LX

P5G41C-M LX USB Device Wake Up

2 3

+5V

(Default)

+5VSB

USBPW5-8

2 3

+5V

+5VSB

(Default)

USBPW1-4

This jumper allows you to enable or disable the keyboard wake-up feature. When you set this jumper to pins 2–3 (+5VSB), you can wake up the computer by pressing a key on the keyboard. This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS.

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

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

• The USB device wake-up feature requires a power supply that can provide 500mA on

the +5VSB lead for each USB port; otherwise, the system would not power up.

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

1-22 Chapter 1: Product introduction

1.10 Connectors

8 7

10 9

4 5

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

ACT/LINK

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

4. Line In port (light blue). This port connects to the tape, CD, DVD player, or other

audio sources.

5. Line Out port (lime). This port connects to a headphone or a speaker. In the 4, 6, and

8-channel congurations, the function of this port becomes Front Speaker Out.

6. Microphone port (pink). This port connects to a microphone.

LED

LAN port

SPEED

LED

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

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

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

Light Blue (Rear panel) Line In Rear Speaker Out Rear Speaker Out Rear Speaker Out

Lime (Rear panel) Line Out Front Speaker Out Front Speaker Out Front Speaker Out

Pink (Rear panel) Mic In Mic In Bass/Center Bass/Center

Lime (Front panel) – – – Side Speaker Out

ASUS P5G41C-M LX 1-23

To congure an 8-channel audio output:

Use the chassis with HD audio module in the front panel to support 8-channel audio output.

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

P5G41C-M LX

P5G41C-M LX Analog front panel connector

AAFP

PIN 1

GND

PRESENCE#

SENSE1_RETUR

SENSE2_RETUR

PORT1 L

PORT1 R

PORT2 R

SENSE_SEND

PORT2 L

HD-audio-compliant

pin definition

PIN 1

AGNDNCNC

MIC2

MICPWR

Line out_R

Line out_L

Legacy AC’97

compliant definition

available for connecting USB 2.0 devices.

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

available for connecting USB 2.0 devices.

9. VGA port. This 15-pin port is for a VGA monitor or other VGA-compatible devices.

10. COM port. This port is for pointing devices or other serial devices.

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

1.10.2 Internal connectors

1. 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

2. IDE connector (40-1 pin PRI_IDE)

PRI_IDE

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

PIN1

P5G41C-M LX

P5G41C-M LX IDE connector

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 P5G41C-M LX 1-25

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

P5G41C-M LX

P5G41C-M LX ATX power connectors

EATXPWR

PIN 1

GND +5 Volts +5 Volts +5 Volts

-5 Volts GND GND GND PSON# GND

-12 Volts +3 Volts

+3 Volts +12 Volts +12 Volts

+5V Standby

Power OK

GND

+5 Volts

GND

+5 Volts

GND +3 Volts +3 Volts

ATX12V

PIN 1

+12V DC

GND

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.

•

We recommend that you use an ATX 12V Specication 2.0-compliant power supply unit

(PSU) with a minimum of 400W power rating. This PSU type has 24-pin and 4-pin power plugs.

•

If you intend to use a PSU with 20-pin and 4-pin power plugs, ensure that the 20-pin power plug can provide at least 15 A on +12 V and that the PSU has a minimum power rating of 400W. The system may become unstable or may not boot up if the power is inadequate.

•

DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will not boot up.

• We recommend that you use a PSU with 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.

•

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

1-26 Chapter 1: Product introduction

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

SATA1

GND

RSATA_RXN1

RSATA_RXP1

GND

RSATA_TXN1

RSATA_TXP1

GND

SATA2

GND

RSATA_RXN2

RSATA_RXP2

GND

RSATA_TXN2

RSATA_TXP2

GND

SATA3

GND

RSATA_RXN3

RSATA_RXP3

GND

RSATA_TXN3

RSATA_TXP3

GND

SATA4

GND

RSATA_RXN4

RSATA_RXP4

GND

RSATA_TXN4

RSATA_TXP4

GND

P5G41C-M LX

P5G41C-M LX SATA connectors

P5G41C-M LX

P5G41C-M LX USB2.0 connectors

USB+5V

USB_P6-

USB_P6+

GND

USB+5V

USB_P5-

USB_P5+

GND

USB56

PIN 1

USB+5V

USB_P8-

USB_P8+

GND

USB+5V

USB_P7-

USB_P7+

GND

USB78

PIN 1

These connectors are for the Serial ATA signal cables for Serial ATA 3Gb/s hard disk and optical disk drives. The Serial ATA 3Gb/s is backward compatible with Serial ATA

1.5Gb/s specication. The data transfer rate of the Serial ATA 3Gb/s is faster than the

standard parallel ATA with 133 MB/s (Ultra DMA133).

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

5. 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 P5G41C-M LX 1-27

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

CPU_FAN

CPU FAN PWM

CPU FAN IN

CPU FAN PWR

GND

GND +12V Rotation

CHA_FAN

P5G41C-M LX

P5G41C-M LX fan connectors

P5G41C-M LX

P5G41C-M LX Digital audio connector

SPDIF_OUT

+5V

SPDIFOUT

GND

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 supports the ASUS Q-FAN feature.

7. 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.

1-28 Chapter 1: Product introduction

8. System panel connector (10-1 pin F_PANEL)

PIN 1

PWR BTN

PLED+

PLED-

PWR

GND

IDE_LED+

IDE_LED-

Ground

Reset

F_PANEL

PWR LED

HD_LED RESET

P5G41C-M LX

P5G41C-M LX System panel connector

P5G41C-M LX Speaker Out Connector

P5G41C-M LX

+5V

GND

Speaker Out

SPEAKER

PIN 1

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 +HDLED)

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

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

the HDD.

• ATX power button/soft-off button (2-pin PWRBTN)

This 2-pin connector is for the system power button.

• 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.

9. Speaker connector (4-pin SPEAKER)

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

ASUS P5G41C-M LX 1-29

1.11 Software support

1.11.1 Installing an operating system

This motherboard supports Windows® XP/Vista/7 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 or later version / Windows® Vista Service Pack 1 or later version 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.

1-30 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:

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.

ASUS P5G41C-M LX 2-1

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

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.

• 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.

ASUSTek EZ Flash 2 BIOS ROM Utility V3.36

FLASH TYPE: MXIC 25L8005

Current ROM

BOARD: P5G41C-M LX VER: 0301 (H:00 B:00) DATE: 12/23/2009

PATH: A:\

Update ROM

BOARD: Unknown VER: Unknown DATE: Unknown

Note

[Enter] Select or Load [Tab] Switch [V] Drive Info

[Up/Down/Home/End] Move [B] Backup [ESC] Exit

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

and automatically reboots the system when done.

• This function supports USB ash disks with FAT 32/16 format and single partition only.

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

2-2 Chapter 2: BIOS information

2.1.3 ASUS CrashFree BIOS

The ASUS CrashFree BIOS 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 restore a corrupted BIOS

le using the motherboard support DVD or a removable device that contains the updated BIOS le.

• Before using this utility, rename the BIOS le in the removable device into

P5G41CM.ROM.

• The BIOS le in the support DVD may not be the latest version. Download the latest BIOS le from the ASUS website at www.asus.com.

• The removable devices that ASUS CrashFree BIOS support vary with motherboard

models. For motherboards without the oppy connector, prepare a USB ash disk before

using this utility.

Recovering the BIOS

To recover the BIOS:

1. Turn on the system.

2. Insert the support DVD to the optical drive or the removable device that contains the

BIOS le to the USB port or to the oppy disk drive, if supported.

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

4. Turn off the system after the utility completes the updating process and turn on again.

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

Ensure to load the BIOS default settings to ensure system compatibility and stability. Select the Load Setup Defaults item under the Exit menu. Refer to section 2.8 Exit menu for details.

ASUS P5G41C-M LX 2-3

2.2 BIOS setup program

Use the BIOS Setup program to update the BIOS or congure its parameters. The BIOS

screens include navigation keys and brief online help to guide you in using the BIOS Setup program.

Entering BIOS Setup at startup

To enter BIOS Setup at startup:

• Press <Delete> during the Power-On Self Test (POST). If you do not press <Delete>, POST continues with its routines.

Entering BIOS Setup after POST

To enter BIOS Setup after POST:

• 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. Do this option only if you

failed to enter BIOS Setup using the rst two options.

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 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.

2-4 Chapter 2: BIOS information

2.2.1 BIOS menu screen

Menu bar

Main Advanced Power Boot Tools Exit

System Time [00:31:48]

System Date [Tue 01/01/2002]

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

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 P5G41C-M LX 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

BIOS SETUP UTILITY

Options

Disabled

Enabled

Pop-up window

Scroll bar

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

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 [12:56:38]

System Date [Tue 01/01/2002]

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

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, SATA1~4

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/SATA 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 when you select the SATA 1/2/3/4 devices.

ASUS P5G41C-M LX 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]

Enhanced Mode Support On [S-ATA]

Sets Serial ATA, Parallel ATA or both as native mode.

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

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 allows 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 P5G41C-M LX 2-9

The following two 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 1333 333 MHz

FSB 1066 266 MHz

FSB 800 200 MHz

PCI Express Frequency [Auto]

Allows you to select the PCI Express frequency. Conguration options: [Auto] [90] [91] [92]~[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%] [Test Mode]

DRAM Frequency [Auto]

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

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

FSB

1333 v v v v

1066 v v v

800 v v

FSB

1333 v v v v v

1066 v v v v

800 v v v

Auto 800MHz 960MHz 1000MHz 1067MHz 1100MHz 1333MHz

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

DDR3 DRAM Frequency

DDR2 DRAM Frequency

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

2-10 Chapter 2: BIOS information

Memory Voltage [Auto]

Allows you to set the memory voltage. The values range from 1.5000V to 2.4450V with a

0.0150V increment. Key in the value directly or use +/- to adjust the voltage.

Conguration options: [Auto]

NB Voltage [Auto]

Allows you to set the Northbridge voltage. The values range from 1.12500V to 1.51875V with a 0.00625V increment. Key in the value directly or use +/- to adjust the voltage.

Conguration options: [Auto]

VTT Voltage [Auto]

Allows you to set the VTT voltage. The values range from 1.20000V to 1.29375V with a

0.00625V increment. Key in the value directly or use +/- to adjust the voltage.

Conguration options: [Auto]

SB 1.5V Voltage [Auto]

Allows you to set the SouthBridge chipset voltage. Conguration options: [1.5V] [1.6V]

Auto PSI [Enabled]

Allows you to enable 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 ration between CPU core clock and the FSB frequency. Conguration option: [Auto]

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

• Key in ratio numbers directly.

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(R) 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 partitions. With virtualization, one computer system can function as multiple virtual systems. Conguration options: [Enabled] [Disabled]

ASUS P5G41C-M LX 2-11

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]

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® Pentium® 4 or later 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 sub-menu.

North Bridge Conguration

Memory Remap Feature [Enabled]

Allows you to enable or disable the remapping of overlapped PCI memory above the total

physical memory. Conguration options: [Disabled] [Enabled]

Congure DRAM Timing by SPD [Enabled]

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

Initiate Graphic Adapter [PEG/PCI]

Allows you to select the graphics controller as the primary boot device.

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

IGD Graphics Mode Select [Enabled, 32MB]

Allows you to select the amout of system memory used by the Interanal graphics device.

Conguration options: [Disabled] [Enabled, 32MB] [Enabled, 48MB] [Enabled, 64MB] [Enabled, 128MB]

GTT Graphics Memory Size [No VT mode, 2MB]

This item is not user- congurable.

2-12 Chapter 2: BIOS information

DVMT Memory [256MB]

Allows you to select the DVMT memory.

Conguration options: [128MB] [256MB] [Maximum DVMT]

Protect Audio Video Path Mode [Lite]

Allows you to select the Protected Audio-Video Path (PAVP) mode.

Conguration options: [Disabled] [Lite] [Paranoid]

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, set this item to [HD Audio] mode. Conguration options: [AC97] [HD Audio]

2.4.4 Onboard Devices Conguration

Onboard Gigabit LAN [Enabled]

Allows you to enable or disable the onboard Gigabit 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 LAN item is set to Enabled.

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]

ASUS P5G41C-M LX 2-13

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]

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 select the emulation type. Conguration options: [Auto] [Floppy] [Forced FDD] [Hard Disk] [CDROM]

2-14 Chapter 2: BIOS information

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]

2.5 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 [Enabled] ACPI APIC Support [Enabled] Anti Surge 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]

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 Anti Surge Support [Enabled]

Allows you to enable or disable the Anti-Surge protection. Conguration options: [Disabled] [Enabled]

ASUS P5G41C-M LX 2-15

2.5.5 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]

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) Device [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]

2.5.6 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 [Enabled]

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

2-16 Chapter 2: BIOS information

CPU Fan Prole [Optimal Mode]

This item appears only when you enable the CPU Q-Fan Control feature and allows you to

set the appropriate performance level of the CPU fan. Conguration options: [Optimal Mode] [Silent Mode] [Performance Mode]

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.

VCORE 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.

2.6 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 ~ xxth 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]

BIOS SETUP UTILITY

Species the Boot

Device Priority sequence.

A virtual oppy disk drive (Floppy Drive B: ) may appear when you set the CD-ROM drive

as the rst boot

device.

• To select the boot device during 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]

ASUS P5G41C-M LX 2-17

Full Screen Logo [Enabled]

This allows you to enable or disable the full screen logo display feature. Conguration options: [Disabled] [Enabled]

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]

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. In 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.

2-18 Chapter 2: BIOS information

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. In 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.

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]

ASUS P5G41C-M LX 2-19

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

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)

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. See section 2.1.2 ASUS EZ Flash 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.

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

clearing its settings.

2.7.3 AI NET 2

Check Realtek LAN cable [Disabled]

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

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

2-20 Chapter 2: BIOS information

2.8 Exit menu

Exit system setup after saving the changes.

F10 key can be used for this operation.

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.

BIOS SETUP UTILITY

Exit system setup after saving the changes.

F10 key can be used for this operation.

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.

ASUS P5G41C-M LX 2-21

2-22 Chapter 2: BIOS information

Asus P5G41C-M LX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Notices

Safety information

About this guide

Product introduction

1.1 Welcome!

1.2 Package contents

1.3 Special features

1.3.1 Product highlights

1.3.2 Innovative ASUS features

1.4 Before you proceed

1.5 Motherboard overview

1.5.1 Placement direction

1.5.2 Screw holes

1.5.3 Motherboard layout

1.5.4 Layout contents

1.6 Central Processing Unit (CPU)

1.6.1 Installing the CPU

1.6.2 Installing the CPU heatsink and fan

1.6.3 Uninstalling the CPU heatsink and fan

1.7 System memory

1.7.1 Overview

1.7.3 Installing a DIMM

1.7.4 Removing a DIMM

1.8 Expansion slots

1.8.1 Installing an expansion card

1.8.3 PCI slots

1.8.4 PCI Express x1 slot

1.8.5 PCI Express x16 slot

1.9 Jumpers

1.10 Connectors

1.10.1 Rear panel connectors

1.10.2 Internal connectors

1.11 Software support

1.11.1 Installing an operating system

1.11.2 Support DVD information

BIOS information

2.1 Managing and updating your BIOS

2.1.1 ASUS Update utility

2.1.2 ASUS EZ Flash 2

2.1.3 ASUS CrashFree BIOS

2.2 BIOS setup program

2.2.1 BIOS menu screen

2.2.2 Menu bar

2.2.3 Navigation keys

2.2.4 Menu items

2.2.5 Submenu items

2.2.7 Pop-up window

2.2.8 Scroll bar

2.2.9 General help

2.3 Main menu

2.3.1 System Time [xx:xx:xx]

2.3.2 System Date [Day xx/xx/xxxx]

2.3.3 Primary IDE Master/Slave, SATA1~4

2.3.5 System Information

2.4 Advanced menu

2.4.3 Chipset

2.4.6 PCI PnP

2.5 Power menu

2.5.1 Suspend Mode [Auto]

2.5.2 ACPI 2.0 Support [Enabled]

2.5.3 ACPI APIC Support [Enabled]

2.5.4 Anti Surge Support [Enabled]

2.5.6 Hardware Monitor

2.6 Boot menu

2.6.1 Boot Device Priority

2.6.3 Security

2.7 Tools menu

2.7.1 ASUS EZ Flash 2

2.7.2 Express Gate [Auto]

2.7.3 AI NET 2

2.8 Exit menu