Motherboard P5G41-M LX2 Series • P5G41-M LX2 • P5G41-M LX2/GB
E5070 First Edition V1 October 2009 Copyright © 2009 ASUSTeK Computer Inc. All Rights Reserved. No part of this manual, including the products and software described in it, may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any means, except documentation kept by the purchaser for backup purposes, without the express written permission of ASUSTeK Computer Inc. (“ASUS”).
Contents Notices........................................................................................................... v Safety information....................................................................................... vi About this guide.......................................................................................... vi P5G41-M LX2 Series specifications summary........................................ viii Chapter 1: 1.1 1.2 1.3 1.4 1.5 Motherboard overview.......................
Contents 2.3 Main menu..................................................................................... 2-4 2.3.1 System Time.................................................................... 2-4 2.3.3 Primary IDE Master/Slave, SATA1~4............................... 2-4 2.3.2 2.3.4 2.4 2.3.5 2.4.1 2.4.3 2.4.4 iv Onboard Devices Configuration....................................... 2-9 USB Configuration........................................................... 2-9 2.5.1 Suspend Mode..........
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.
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.
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.
P5G41-M LX2 Series specifications summary CPU LGA775 socket for Intel® Core™2 Quad / Core™2 Extreme / Core™2 Duo / Pentium® dual-core / Celeron® dual-core / Celeron® processors Supports Intel® 45nm multi-core CPU Supports Intel® Hyper-Threading Technology and Enhanced Intel SpeedStep® Technology (EIST) * Refer to www.asus.com for Intel® CPU support list.
P5G41-M LX2 Series specifications summary Back panel I/O ports 1 x PS/2 keyboard port 1 x PS/2 mouse port 1 x COM port 1 x VGA port 1 x LAN (RJ-45) port 4 x USB 2.0/1.1 ports 1 x LPT port (optional) 6-channel audio I/O ports Internal connectors 2 x USB 2.0/1.1 connectors support additional 4 USB 2.0/1.
Chapter 1 Product introduction Thank you for buying an ASUS® P5G41-M LX2 Series motherboard! Before you start installing the motherboard, and hardware devices on it, check the items in your motherboard package. Refer to page ix for the list of accessories. If any of the items is damaged or missing, contact your retailer. 1.1 Before you proceed Take note of the following precautions before you install motherboard components or change any motherboard settings.
1.2 Motherboard overview 1.2.1 Motherboard layout Ensure that you install the motherboard into the chassis in the correct orientation. The edge with external ports goes to the rear part of the chassis. 1 2 3 4 5 6 19.1cm(7.5in) KBPWR KBMS CPU_FAN USB34 USBPW1-4 LAN1_USB12 RTL 8112L PRI_IDE 7 24.4cm(9.6in) CHA_FAN DDR2 DIMM_B1 (64bit, 240-pin module) LGA775 VGA Place this side towards the rear of the chassis.
1.3 Central Processing Unit (CPU) This motherboard comes with a surface mount LGA775 socket designed for the Intel® Core™2 Quad / Core™2 Extreme / Core™2 Duo / Pentium® dual-core / Celeron® dual-core / Celeron® processors. • 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.
1.4.2 Memory configurations You may install 512MB, 1GB, 2GB, and 4GB unbuffered non‑ECC DDR2 DIMMs into the DIMM sockets. • You may install varying memory sizes in Channel A and Channel B. The system maps the total size of the lower-sized channel for the dual-channel configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation. • Always install DIMMs with the same CAS latency.
DDR2-800MHz capability Vendor Part No. A-Data AD2800E001GOU A-Data AD2800002GMU A-Data A-Data Corsair Corsair Corsair Corsair Corsair Crucial Crucial Crucial Crucial G.SkiLL Size SS/ DS Chip Brand Chip NO. CL Voltage 2048MB(Kit of 2) SS - - 4-4-4-12 2.0~2.
DDR2-800MHz capability Vendor Part No. Size SS/ DS Chip Brand Chip NO. CL Voltage OCZ OCZ2RPR8002GK 1024MB DS OCZ - 4-4-4-15 2.1V DIMM socket support (Optional) A* B* • • OCZ OCZ2SE8002GK 2048MB(Kit of 2) DS - - 5-5-5-15 1.
1.5 Expansion slots In the future, you may need to install expansion cards. The following sub‑sections describe the slots and the expansion cards that they support. Unplug the power cord before adding or removing expansion cards. Failure to do so may cause you physical injury and damage motherboard components. 1.5.1 Installing an expansion card To install an expansion card: 1.
1.6 1. Jumpers 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. CLRTC 1 2 2 3 Normal (Default) Clear RTC P5G41-M LX2/GB P5G41-M LX2/GB Clear RTC RAM To erase the RTC RAM: 1.
2. Keyboard power (3-pin KBPWR) 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 (the default is the Space Bar)s. This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS. KBPWR 1 2 3 2 +5VSB +5V (Default) P5G41-M LX2/GB P5G41-M LX2/GB Keyboard Power Setting 3.
1.7 Connectors 1.7.1 Rear panel ports 1 2 8 9 10 3 4 6 7 5 1. PS/2 mouse port (green). This port is for a PS/2 mouse. 2. LAN (RJ-45) port. This port allows connection to a Local Area Network (LAN) through a network hub. Refer to the table below for the LAN port LED indications.
6. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices. 7. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices. 8. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other VGA-compatible devices. 9. COM port. This port is for pointing devices or other serial devices. 10. PS/2 keyboard port (purple). This port is for a PS/2 keyboard. 1.7.2 1.
2. CPU and Chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN) 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. Insufficient air flow 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.
4. IDE connector (40-1 pin PRI_IDE) The onboard IDE connector is for the Ultra DMA 100/66 signal cable. There are three connectors on each Ultra DMA 100/66 signal cable: blue, black, and gray. Connect the blue connector to the motherboard’s IDE connector, then select one of the following modes to configure your device. PRI_IDE PIN1 P5G41-M LX2/GB NOTE:Orient the red markings on the IDE ribbon cable to PIN 1.
USB connectors (10-1 pin USB56, USB78) USB56 USB78 USB+5V USB_P7USB_P7+ GND PIN 1 USB+5V USB_P5USB_P5+ GND PIN 1 P5G41-M LX2/GB USB+5V USB_P8USB_P8+ GND NC 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 specification that supports up to 480Mbps connection speed. USB+5V USB_P6USB_P6+ GND NC 5. P5G41-M LX2/GB USB2.
Front panel audio connector (10-1 pin AAFP) NC AGND NC NC SENSE2_RETUR 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. GND PRESENCE# SENSE1_RETUR 6.
8. System panel connector (10-1 pin F_PANEL) This connector supports several chassis-mounted functions. F_PANEL PWRBTN PLED+ PLEDPWR GND PLED P5G41-M LX2/GB IDE_LED+ IDE_LEDGround Reset PIN 1 +HDLED RESET P5G41-M LX2/GB System panel connector • • • • 1-16 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.
1.8 Software support 1.8.1 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.
Chapter 2 BIOS information 2.1 Managing and updating your BIOS Save a copy of the original motherboard BIOS file to a USB flash 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).
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 3. a. Select Update BIOS from a file, then click Next. b. Locate the BIOS file from the Open window, then click Open. 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.
2.1.3 ASUS CrashFree BIOS The ASUS CrashFree BIOS is an auto recovery tool that allows you to restore the BIOS file when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS file using the motherboard support DVD or a removable device that contains the updated BIOS file. • The BIOS file in the support DVD may not be the latest version. Download the latest BIOS file from the ASUS website at www.asus.com.
Using the power button, reset button, or the ++ 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.
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 specifically configuring a CD-ROM drive. Select ARMD (ATAPI Removable Media Device) if your device is either a ZIP, LS-120, or MO drive. Configuration options: [Not Installed] [Auto] [CDROM] [ARMD] This item does not appear when you select the SATA 1/2/3/4 devices. LBA/Large Mode [Auto] Enables or disables the LBA mode.
2.3.5 System Information This menu gives you an overview of the general system specifications. The BIOS automatically detects the items in this menu. BIOS Information Displays the auto-detected BIOS information. Processor Displays the auto-detected CPU specification. 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.
2.4.1 CPU Configuration 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. Configuration 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.
2.4.2 Chipset The Chipset menu allows you to change the advanced chipset settings. Select an item then press to display the sub-menu. North Bridge Configuration Memory Remap Feature [Enabled] Allows you to enable or disable the remapping of overlapped PCI memory above the total physical memory. Configuration options: [Enabled] [Disabled] Configure DRAM Timing by SPD [Enabled] Allows you to enable or disable configurating DRAM Timing by SPD.
2.4.3 Onboard Devices Configuration Serial Port1 Address [3F8/IRQ4] Allows you to select the Serial Port1 base address. Configuration options: [Disabled] [3F8/IRQ4] [2F8/IRQ3] [3E8/IRQ4] [2E8/IRQ3] 2.4.4 USB Configuration The items in this menu allows you to change the USB-related features. Select an item then press to display the configuration options. The Module Version and USB Devices Enabled items show the auto-detected values. If no USB device is detected, the item shows None.
2.4.5 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 field values can cause the system to malfunction. Plug and Play O/S [No] When set to [No], BIOS configures all the devices in the system.
2.5.4 APM Configuration 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. Configuration 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.
2.6 Boot menu The Boot menu items allow you to change the system boot options. Select an item then press to display the sub-menu. Main Advanced Power BIOS SETUP UTILITY Boot Tools Exit Boot Settings Boot Device Priority Boot Settings Configuration Security 2.6.1 Specifies the Boot Device Priority sequence. A virtual floppy disk drive (Floppy Drive B: ) may appear when you set the CD-ROM drive as the first boot device.
Hit ‘DEL’ Message Display [Enabled] When set to [Enabled], the system displays the message Press DEL to run Setup during POST. Configuration options: [Disabled] [Enabled] 2.6.3 Security The Security menu items allow you to change the system security settings. Select an item then press to display the configuration 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.
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. Configuration options: [Setup] [Always] 2.7 Tools menu The Tools menu items allow you to configure options for special functions. Select an item then press to display the sub-menu.
