Asus P5G41C-M LX User Manual

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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, modified or altered, unless such repair, modification of alteration is authorized in writing by ASUS; or (2) the serial number of the product is defaced or missing.

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

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

Products and corporate names appearing in this manual may or may not be registered trademarks or copyrights of their respective companies, and are used only for identification or explanation and to the owners’ benefit, without intent to infringe.

Offer to Provide Source Code of Certain Software

This product may contain copyrighted software that is licensed under the General Public License (“GPL”) and under the Lesser General Public License Version (“LGPL”). The GPL and LGPL licensed code in this product is distributed without any warranty. Copies of these licenses are included in this product.

You may obtain the complete corresponding source code (as defined in the GPL) for the GPL Software, and/or the complete corresponding source code of the LGPL Software (with the complete machinereadable “work that uses the Library”) for a period of three years after our last shipment of the product including the GPL Software and/or LGPL Software, which will be no earlier than December 1, 2011, either

(1)for free by downloading it from http://support.asus.com/download;

(2)for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location where you want to have it shipped to, by sending a request to:

ASUSTeK Computer Inc.

Legal Compliance Dept. 15 Li Te Rd.,

Beitou, Taipei 112 Taiwan

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.

The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as the corresponding binary/object code.

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

ASUSTeK is eager to duly provide complete source code as required under various Free Open Source Software licenses. If however you encounter any problems in obtaining the full corresponding source code we would be much obliged if you give us a notification 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 specifications 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 configurations . .................................................	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	Configuring 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	Configuration fields..........................................................	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 Configuration......................................................	2-8
	2.3.5	System Information..........................................................	2-9
2.4	Advanced menu............................................................................		2-9
	2.4.1	JumperFree Configuration...............................................	2-9
	2.4.2	CPU Configuration..........................................................	2-11
	2.4.3	Chipset..........................................................................	2-12
	2.4.4	Onboard Devices Configuration....................................	2-13
	2.4.5	USB Configuration.........................................................	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 Configuration........................................................	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 Configuration...........................................	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 modifications 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 fix it by yourself. Contact a qualified 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 qualified service technician or your retailer.

About this guide

This user guide contains the information you need when installing and configuring 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 find 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 flyers, 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 specifications summary

CPU	LGA775 socket for Intel® Core™2 Quad / Core™2 Extreme
	/ 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.
Chipset	Northbridge: Intel® G41
	Southbridge: Intel® ICH7

Front Side Bus

Memory

Graphics

Expansion slots

1333/1066/800 MHz

Dual channel memory architecture

-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

(Qualified 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.

Integrated Intel® GMA X4500 GPU Maximum shared memory of 1GB

Supports RGB with max. resolution of 2048 x 1536 (@ 75Hz)

Supports Microsoft® DirectX® 10

1 x PCIe x16 slot

1 x PCIe x1 slot

2 x PCI slots

Storage	1 x Ultra DMA 100/66/33 connector
	4 x Serial ATA 3Gb/s connectors
LAN	PCIe Gigabit LAN
Audio	VT1708S High Definition Audio 8-channel CODEC
	* 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
USB	Supports up to 8 USB 2.0/1.1 ports (4 ports at mid-board,
	4 ports at the back panel)
	(continued on the next page)

P5G41C-M LX specifications summary

ASUS exclusive	SFS (Stepless Frequency Selection):
overclocking	- FSB tuning from 200MHz to 800MHz at 1MHz increment
features	Overclocking Protection:
	- ASUS C.P.R. (CPU Parameter Recall)
ASUS unique	ASUS CrashFree BIOS 3
features	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

Back panel I/O ports

Internal connectors

BIOS

Manageability

Accessories

Support DVD

Form factor

1 x PS/2 keyboard port

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

2 x USB 2.0/1.1 connectors support additional

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

8Mb Flash ROM, AMI BIOS, PnP, DMI 2.0, WfM 2.0, ACPI 2.0a, SM BIOS 2.5

WOL, PXE, WOR by Ring, PME Wake up

1 x Ultra DMA 133/100/66 cable

2 x Serial ATA cables

1 x I/O shield

1 x User Manual

Drivers

ASUS PC Probe II

ASUS Update

Anti-Virus software (OEM version)

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

* Specifications are subject to change without notice.

Chapter 1

Product introduction

1.1Welcome!

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.

1.2Package 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.

1.3Special features

1.3.1Product highlights

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

ASUS P5G41C-M LX

1-1

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 specifications, 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 efficient power management for advanced operating systems.

1.3.2Innovative 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 flash drives with at least 1.2GB free disk space. When installing it on USB HDDs or flash drives, connect the drives to the motherboard USB port before turning on the computer.

•The actual boot time depends on the system configuration.

•ASUS Express Gate supports file uploading from SATA HDDs, ODDs and USB drives. It supports file 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 file using the bundled support DVD or USB flash disk that contains the latest BIOS file.

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

1.4Before you proceed

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

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

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

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

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

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

Onboard LED

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

the system and unplug the power cable before removing or plugging in any motherboard component. The illustration below shows the location of the onboard LED.

SB_PWR

P5G41C-M LX

ON OFF

Standby Power Powered Off

P5G41C-M LX Onboard LED

1-4	Chapter 1: Product introduction

1.5Motherboard overview

Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits 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.

1.5.1Placement 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.

1.5.2Screw 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

P5G41C-M LX

ASUS P5G41C-M LX

1-5

1.5.3Motherboard layout

21.6cm(8.5in)

KBMS

KBPWR

CPU_FAN

ATX12V

COM

LPT

pin module)

PRI_IDE

VGA

LGA775

240-

(64bit,

USBPW1-4

USB34

RTL

DDR3 DIMM

DDR2 DIMM

DDR3 DIMM

DDR2 DIMM

24.4cm(9.6in)

8112L

LAN1_USB12

Intel®

G41

ICS

CHA_FAN

9LRS954

AUDIO

PCIEX1_1

EATXPWR

P5G41C-M LX

Super

PCIEX16

I/O

Lithium Cell

8Mb

Intel®

CMOS Power

PCI1

BIOS

ICH7

SB_PWR

PCI2

CLRTC

VIA

VT1708S

SPDOF_OUT

USBPW5-8

SPEAKER

USB56

USB78

SATA1

SATA2

SATA3

SATA4

F_PANEL

AAFP

1.5.4Layout 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,	1-26	10.	Serial ATA connectors (7-pin SATA1-4)	1-27
	4-pin ATX12V)
3.	USB device wake-up (3-pin USBPW1-4, 3-pin	1-22	11.	USB connectors (10-1 pin USB56, USB78)	1-27
	USBPW5-8)
4.	Intel LGA775 CPU socket	1-7	12.	Speaker connector (4-pin SPEAKER)	1-29
5.	CPU and chassis fan connectors	1-28	13.	Digital audio connector (4-1 pin SPDIF_OUT)	1-28
	(4-pin CPU_FAN, 3-pin CHA_FAN)
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

1-6	Chapter 1: Product introduction

1.6Central Processing Unit (CPU)

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

• Unplug all power cables before installing the CPU.

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

•Upon purchase of the motherboard, ensure that the PnP cap is on the socket and the

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

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

Authorization (RMA) requests only if the motherboard comes with the cap on the

LGA775 socket.

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

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

1.6.1Installing the CPU

To install a CPU:

1.Locate the CPU socket on the motherboard.

P5G41C-M LX

P5G41C-M LX CPU socket 775

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 forefinger to a 100º angle (4A), then push the PnP cap from the load plate window to remove (4B).

PnP cap

Load plate

5.Position the CPU over the socket, ensuring that the gold triangle is on the bottom left corner of the socket then fit the socket alignment key into the CPU notch.

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 finger directly.

7.Close the load plate (A), then push

the load lever (B) until it snaps into the	A
retention tab.

ASUS P5G41C-M LX

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