1.10 Connectors... 1-23 1.10.1 Rear panel connectors.. 1-23 1.10.2 Internal connectors.. 1-24

Chapter 2: BIOS setup

2.1 Managing and updating your BIOS... 2-2 2.1.1 2.1.2 2.1.3 2.1.4 2.1.5 2.2 2.2.1 2.2.2 2.2.3 2.2.4 2.2.5 2.2.6 2.2.7 2.2.8 2.2.9 2.3 2.3.1 2.3.2 2.3.3 2.3.4 2.3.5 2.3.6 2.4 2.4.1 2.4.2 2.4.3 2.4.4 2.4.5 Creating a bootable floppy disk. 2-2 ASUS EZ Flash utility.. 2-3 AFUDOS utility.. 2-4 ASUS CrashFree BIOS 2 utility.. 2-6 ASUS Update utility.. 2-8 BIOS menu screen.. 2-12 Menu bar... 2-12 Navigation keys... 2-12. Menu items.. 2-13 Sub-menu items... 2-13 Configuration fields.. 2-13 Pop-up window.. 2-13. Scroll bar.. 2-13. General help... 2-13 System Time... 2-14 System Date... 2-14 Legacy Diskette A.. 2-14 Primary, Third and Fourth IDE Master/Slave.. 2-15 IDE Configuration... 2-16 System Information.. 2-17 USB Configuration.. 2-18 CPU Configuration.. 2-20 Chipset... 2-21. Onboard Devices Configuration.. 2-24. PCI PnP.. 2-26
BIOS setup program... 2-11.

Main menu... 2-14.

Advanced menu.. 2-18
2.5 Power menu... 2-27 2.5.1 2.5.2 2.5.3 2.5.4 2.5.5 2.6 2.6.1 2.6.2 2.6.3 2.7 3.1 3.2 Suspend Mode.. 2-27. ACPI 2.0 Support.. 2-27 ACPI APIC Support.. 2-27 APM Configuration.. 2-28 Hardware Monitor.. 2-30. Boot Device Priority.. 2-31 Boot Settings Configuration.. 2-32 Security... 2-33.

Boot menu... 2-31

Exit menu... 2-35. Installing an operating system.. 3-2. Support CD information.. 3-2 3.2.1 3.2.2 3.2.3 3.2.4 Running the support CD... 3-2. Drivers menu... 3-3. Utilities menu... 3-4 ASUS Contact information.. 3-5
Chapter 3: Software support

Appendix: CPU features

A.1 A.2 Intel EM64T.. A-2. Using the Intel EM64T feature.. A-2 Enhanced Intel SpeedStep Technology (EIST). A-2 A.2.1 A.2.2 A.3 System requirements.. A-2. Using the EIST... A-3.
Intel Hyper-Threading Technology.. A-4 Using the Hyper-Threading Technology. A-4

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 manufacturers 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 users 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.

Safety information

Electrical safety
To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system. When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device. Before connecting or removing signal cables from the motherboard, ensure that all power cables are unplugged. Seek professional assistance before using an adapter or extension cord. These devices could interrupt the grounding circuit. Make sure that your power supply is set to the correct voltage in your area. If you are not sure about the voltage of the electrical outlet you are using, contact your local power company. If the power supply is broken, do not try to 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, make sure all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately. To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry. Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may become wet. Place the product on a stable surface. If you encounter technical problems with the product, contact a qualified service technician or your retailer.
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.

Package contents

ASUS P5GC-MX motherboard 1 x Serial ATA cable 1 x Serial ATA power cable 1 x Ultra DMA 100/66 cable 1 x Floppy disk drive cable I/O shield ASUS motherboard support CD User guide
Check your motherboard package for the following items. Motherboard Cables Accessories Application CDs Documentation
If any of the above items is damaged or missing, contact your retailer.

Special features

1.3.1 Product highlights

Intel Core2 Duo

This motherboard supports the latest powerful and energy efficient processors from Intel. Intel Core2 Duo is based on the Intel Core Microarchitecture and built on the 65-nanometer (nm) process technology with copper interconnect. Core2 Duo allows users to step up to Intel new levels of gaming experience and multi-tasking performance. Boosting performance is a shared and multi-core optimized L2 cache of 2 MB or 4 MB, guaranteeing enhanced user experience in the digital home and office. See page 1-8 for details.
Due to chipset limitation, Intel Core2 processors can only run at a maxium speed of 800 MHZ FSB on this motherboard.

64-bit CPU support

The motherboard supports 64-bit processors that provides highperformance computing and faster memory access required for memory and data intensive applications.

Intel 945GC chipset

The Intel 945GC graphics memory controller hub (GMCH) and the ICH7 I/O controller hub provide the vital interfaces for the motherboard. The GMCH features the Intel Graphics Media Accelerator 950, an integrated graphics engine for enhanced 3D, 2D, and video capabilities. The GMCH contains one 16-lane PCI Express port intended for an external PCI Express graphics card and provides the interface for a processor in the 775-land package with 800/533 MHz front side bus (FSB), dual channel DDR2 at speeds of up to 533 MHz. The Intel ICH7 Southbridge represents the seventh generation I/O controller hub that provides the interface for PCI Express and high definition audio.

DDR2 memory support

The motherboard supports DDR2 memory which features data transfer rates of 533 /400 MHz to meet the higher bandwidth requirements of the latest 3D graphics, multimedia, and Internet applications. The dual-channel DDR2 architecture doubles the bandwidth of your system memory to boost system performance, eliminating bottlenecks with peak bandwidths of up to 8.5 GB/s. See pages 115 to 1-17 for details.

PCI Express interface

The motherboard fully supports PCI Express, the latest I/O interconnect technology that speeds up the PCI bus. PCI Express features pointtopoint serial interconnections between devices and allows higher clockspeeds by carrying data in packets. This high speed interface is software compatible with existing PCI specifications. See page 1-20 for details.

1.8.2 Configuring an expansion card
After installing the expansion card, configure it by adjusting the software settings. 1. 2. 3. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for information on BIOS setup. Assign an IRQ to the card. Refer to the tables on the next page. Install the software drivers for the expansion card.
1.8.3 Interrupt assignments
Standard interrupt assignments
IRQ Standard Function System Timer Keyboard Controller Re-direct to IRQ#9 Communications Port (COM1)* IRQ holder for PCI steering* Floppy Disk Controller Printer Port (LPT1)* System CMOS/Real Time Clock IRQ holder for PCI steering* IRQ holder for PCI steering* IRQ holder for PCI steering* PS/2 Compatible Mouse Port* Numeric Data Processor Primary IDE Channel
* These IRQs are usually available for ISA or PCI devices.
IRQ assignments for this motherboard
PCI slot 1 PCI slot 2 PCI Express x16 slot PCI Express x1 slot Onboard USB controller 1 Onboard USB controller 2 Onboard USB controller 3 Onboard USB controller 4 Onboard USB 2.0 controller Onboard IDE port Onboard HD audio Onboard LAN A B C D E F G H shared non-shared shared shared shared shared shared shared shared shared shared shared
When using PCI cards on shared slots, ensure that the drivers support Share IRQ or that the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable.

1.8.4 PCI slots

The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specifications. The figure shows a LAN card installed on a PCI slot.
If you install a PCI graphics card, we recommend that you remove the onboard graphics card driver.

1.8.5 PCI Express x1

This motherboard supports PCI Express x1 network cards, SCSI cards and other cards that comply with the PCI Express specifications. The figure shows a network card installed on the PCI Express x1 slot.

LAN port LED indications

Status OFF ORANGE BLINKING Description No link Linked Data activity
ACT/LINK LED SPEED LED Status OFF ORANGE GREEN Description 10 Mbps connection 100 Mbps connection 1 Gbps connection

ACT/LINK SPEED LED LED

LAN port

4. 5. 6.

Line In port (light blue). This port connects the tape, CD, DVD player, or other audio sources. Line Out port (lime). This port connects a headphone or a speaker. In 4-channel, and 6-channel configuration, the function of this port becomes Front Speaker Out. Microphone port (pink). This port connects a microphone.
Refer to the audio configuration table on the next page for the function of the audio ports in 2, 4, or 6-channel configuration.
Audio 2, 4, or 6-channel configuration
Port Light Blue Lime Pink Headset 2-channel Line In Line Out Mic In 4-channel Rear Speaker Out Front Speaker Out Mic In 6-channel Rear Speaker Out Front Speaker Out Bass/Center

7. 8. 9.

USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices. VGA port. This port is for a VGA monitor or other VGA-compatible devices.
10. Serial port. This 9-pin COM1 port is for pointing devices or other serial devices. 11. PS/2 keyboard port (purple). This port is for a PS/2 keyboard.
1.10.2Internal connectors
1. Floppy disk drive connector (34-1 pin FLOPPY) This connector is for the provided floppy disk drive (FDD) signal cable. Insert one end of the cable to this connector, then connect the other end to the signal connector at the back of the floppy disk drive.
Pin 5 on the connector is removed to prevent incorrect cable connection when using an FDD cable with a covered Pin 5.
PIN1 NOTE: Orient the red markings on the floppy ribbon cable to PIN 1.
P5GC-MX Floppy Disk Drive Connector
2. IDE connectors (40-1 pin PRI_IDE) Theonboard IDE connectors are for Ultra DMA 100/66/33 signal cables. There are threeconnectors on each Ultra DMA 100/66/33 signal cable: blue, black, and gray. Connect the blue connector to themotherboards IDE connector, then select one of the following modes to configure your device(s).

P5GC-MX IDE Connector

Drive jumper setting Single device Two devices Cable-Select or Master Cable-Select Master Slave

PRI_IDE

Mode of device(s) Master Slave Master Slave
Cable connector Black Black Gray Black or gray
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. If any device jumper is setas Cable-Select,make sure all other device jumpers have the same setting.
3. Serial ATA connectors (7-pin SATA1, SATA2, SATA3, SATA4) These connectors are for the Serial ATA signal cables for Serial ATA hard disk drives.
GND RSATA_TXP4 RSATA_TXN4 GND RSATA_RXN4 RSATA_RXP4 GND
GND RSATA_RXP1 RSATA_RXN1 GND RSATA_TXN1 RSATA_TXP1 GND
GND RSATA_RXP2 RSATA_RXN2 GND RSATA_TXN2 RSATA_TXP2 GND
P5GC-MX SATA Connectors When using the connectors in Standard IDE mode, connect the primary (boot) hard disk drive to the SATA1/2 connector. Refer to the table below for the recommended SATA hard disk drive connections.
Serial ATA hard disk drive connection
Connector Color Setting Use

SATA1/2 SATA3/4

Red Black

Master Slave

Boot disk Data Disk
GND RSATA_TXP3 RSATA_TXN3 GND RSATA_RXN3 RSATA_RXP3 GND
4. CPU and Chassis fan connectors (4-pin CPU_FAN, 3-pin CHA_FAN) The fan connectors support cooling fans of a total of 1A~2.2A (26.4W max.) at +12V. Connect the fan cables to the fan connectors on the motherboard, making sure that the black wire of each cable matches the ground pin of the connector.
Do not forget to connect the fan cables to the fan connectors. Insufficient air flow inside the system may damage the motherboard components. These are not jumpers! DO NOT place jumper caps on the fan connectors.

CHA_FAN

GND +12V Rotation

P5GC-MX Fan Connectors

5. Digital Audio connector (4-1 pin SPDIF_OUT) This connector is for the S/PDIF audio module to allow digital sound output. Connect one end of the S/PDIF audio cable to this connector and the other end to the S/PDIF module.

EZFlash starting BIOS update Checking for floppy.
Insert the floppy disk that contains the BIOS file to the floppy disk drive. When the correct BIOS file is found, EZ Flash performs the BIOS update process and automatically reboots the system when done.
EZFlash starting BIOS update Checking for floppy. Floppy found! Reading file P5GCMX.rom. Completed. Start erasing.| Start programming.| Flashed successfully. Rebooting.
Do not shut down or reset the system while updating the BIOS to prevent system boot failure! A Floppy not found! error message appears if there is no floppy disk in the drive. A P5GCMX.ROM not found! error message appears if the correct BIOS file is not found in the floppy disk. Make sure that you rename the BIOS file to P5GCMX.ROM.

2.1.3 AFUDOS utility

The AFUDOS utility allows you to update the BIOS file in DOS environment using a bootable floppy disk with the updated BIOS file. This utility also allows you to copy the current BIOS file that you can use as backup when the BIOS fails or gets corrupted during the updating process.

Copying the current BIOS

To copy the current BIOS file using the AFUDOS utility:
Make sure that the floppy disk is not write-protected and has at least 1024KB free space to save the file. The succeeding BIOS screens are for reference only. The actual BIOS screen displays may not be same as shown.
Copy the AFUDOS utility (afudos.exe) from the motherboard support CD to the bootable floppy disk you created earlier. Boot the system in DOS mode, then at the prompt type: afudos /o[filename] where the [filename] is any user-assigned filename not more than eight alphanumeric characters for the main filename and three alphanumeric characters for the extension name.
A:\>afudos /oOLDBIOS1.rom

Main filename

Extension name
Press <Enter>. The utility copies the current BIOS file to the floppy disk.
A:\>afudos /oOLDBIOS1.rom AMI Firmware Update Utility - Version 1.19(ASUS V2.07(03.11.24BB)) Copyright (C) 2002 American Megatrends, Inc. All rights reserved. Reading flash.. done Write to file. ok A:\>
The utility returns to the DOS prompt after copying the current BIOS file.

Updating the BIOS file

To update the BIOS file using the AFUDOS utility: 1. Visit the ASUS website (www.asus.com) and download the latest BIOS file for the motherboard. Save the BIOS file to a bootable floppy disk.

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 Default Settings item under the Exit Menu. See section 2.7 Exit Menu. The BIOS setup screens shown in this section are for reference purposes only, and may not exactly match what you see on your screen. Visit the ASUS website (www.asus.com) to download the latest BIOS file for this motherboard.

2.2.1 BIOS menu screen

Menu items Menu bar Configuration fields General help
System Time System Date Legacy Diskette A Primary IDE Master Primary IDE Slave Third IDE Master Third IDE Slave Fourth IDE Master Fourth IDE Slave IDE Configuration
[19:34:30] [Thu 01/17/2002] [1.44M, 3.5 in] :[Not :[Not :[Not :[Not :[Not :[Not Detected] Detected] Detected] Detected] Detected] Detected]
Use [ENTER], [TAB] or [SHIFT-TAB] to select a field. Use [+] or [-] to configure system time.

System Information

Sub-menu items

Navigation keys

2.2.2 Menu bar
The menu bar on top of the screen has the following main items: Main Advanced Power Boot Exit For changing the basic system configuration For changing the advanced system settings For changing the advanced power management (APM) configuration For changing the system boot configuration 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.

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 specific items for that menu. For example, selecting Main shows the Main menu items. The other items (Advanced, Power, Boot, and Exit) on the menu bar have their respective menu items.
System Time System Date Legacy Diskette A Language Primary IDE Master Primary IDE Slave Secondary IDE Master Secondary IDE Slave Third IDE Master Fourth IDE Master IDE Configuration System Information [11:10:19] [Thu 03/27/2003] [1.44M, 3.5 in] [English] :[ST320413A] :[ASUS CD-S340] :[Not Detected] :[Not Detected] :[Not Detected] :[Not Detected] Use [ENTER], [TAB] or [SHIFT-TAB] to select a field. Use [+] or [-] to configure system time.

The items in this menu allow you to set or change the configurations for the IDE devices installed in the system. Select an item then press <Enter> if you wish to configure the item.
IDE Configuration Onboard IDE Operate Mode [Enhanced Mode] Enhanced Mode Support On [S-ATA] IDE Detect Time Out (Sec) [35]
Onboard IDE Operate Mode [Enhanced Mode]
Disables or allows selection of the IDE operation mode depending on the operating system (OS) that you installed. Set to Enhanced Mode if you are using native OS, such as Windows 2000/XP. Configuration options: [Disabled] [Compatible Mode] [Enhanced Mode]
Enhanced Mode Support On [S-ATA] The default setting S-ATA allows you to use native OS on Serial ATA and Parallel ATA ports. We recommend that you do not change the default setting for better OS compatibility. In this setting, you may use legacy OS on the Parallel ATA ports only if you did not install any Serial ATA device.
The P-ATA+S-ATA and P-ATA options are for advanced users only. If you set to any of these options and encounter problems, revert to the default setting S-ATA. Configuration options: [S-ATA+P-ATA] [SATA] [P-ATA]

IDE Detect Time Out [35]

Selects the time out value for detecting ATA/ATAPI devices. Configuration options: [0] [5] [10] [15] [20] [25] [30] [35]

2.3.6 System Information

This menu gives you an overview of the general system specifications. The BIOS automatically detects the items in this menu.
AMIBIOS Version : 0205 Build Date : 12/29/06 Processor Type Speed Count : Genuine Intel(R) CPU 3.80GHz : 3800MHz : 1
System Memory Total : 256MB Appropriated : 8MB Available : 248MB

AMI BIOS

Displays the auto-detected BIOS information

Processor

Displays the auto-detected CPU specification

System Memory

Displays the auto-detected system memory

Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system devices.

Configure advanced CPU settings Manufacturer: Brand String: Frequency : FSB Speed : Cache L1 Cache L2 Cache L3 Intel Genuine Intel(R) CPU 3.80GHz 3800MHz 1085MHz

: 16 KB : 2048 KB : 0 KB

Sets the ratio between CPU Core Clock and the FSB Frequency. NOTE: If an invalid ratio is set in CMOS then actual and setpoint values may differ.
Ratio Status: Unlocked (Max:19, Min:14) Ratio Actual Value : 14 Ratio CMOS Setting: [ 6] VID CMOS Setting: [ 62] Microcode Updation [Enabled] Max CPUID Value Limit [Disabled] Execute Disable Function [Disabled] Enhanced C1 Control [Auto] CPU Internal Thermal Control [Auto] Hyper Threading Technology [Enabled] Intel(R) SpeedStep(tm) Tech. [Disabled]

+F1 F10 ESC

Select Screen Select Item Change Option General Help Save and Exit Select Screen Exit
Select Item Change Option General Help Save and Exit Exit

Ratio CMOS Setting [ 6]

Sets the ratio between the CPU Core Clock and the Front Side Bus frequency. The default value of this item is auto-detected by BIOS. Use the <+> or <-> keys to adjust the values.

VID CMOS Setting [ 62]

Allows you to set the VID CMOS setting at which the processor is to run. The BIOS auto-detects the default value of this item. Use the <+> or <-> keys to adjust the values.
Microcode Updation [Enabled]
Allows you to enable or disable the microcode updation. Configuration options: [Disabled] [Enabled]
Max CPUID Value Limit [Disabled]
Enable this item to boot legacy operating systems that cannot support CPUs with extended CPUID functions. Configuration options: [Disabled] [Enabled]
Execute Disable Function [Disabled]
Enables or disables the Execute Disable function. This item appears only when you install a processor with the Execute Disable function. Configuration options: [Disabled] [Enabled]
Enhanced C1 Control [Auto]
When set to [Auto], the BIOS will automatically check the CPUs capability to enable the C1E support. In C1E mode, the CPU power consumption is lower when idle. Configuration options: [Auto] [Disabled]
CPU Internal Thermal Control [Auto]
Disables or sets the CPU internal thermal control. Configuration options: [Auto] [Disabled]
Hyper Threading Technology [Enabled]
Allows you to enable or disable the processor Hyper-Threading Technology. Configuration options: [Disabled] [Enabled]
The following item appears only when you installed an Intel Pentium 4 and later processors that supports the Enhanced Intel SpeedStep Technology (EIST).
Intel(R) SpeedStep Technology [Disabled]
Allows you to use the Enhanced Intel SpeedStep Technology. When set to [Automatic], you can adjust the system power settings in the operating system to use the EIST feature. Set this item to [Maximum] or [Disabled] if you do not want to use the EIST. The CPU constantly operates at a lower internal frequency when you set this item to [Minimum]. Configuration options: [Enabled] [Disabled]

Enabled or disable APM.

Power Button Mode [On/Off]
Allows the system to go into On/Off mode or suspend mode when the power button is pressed. Configuration options: [On/Off] [Suspend]
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 [Enabled]
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. Configuration options: [Disabled] [Enabled]
Power On By External Modems [Disabled]
This allows either settings of [Enabled] or [Disabled] for powering up the computer when the external modem receives a call while the computer is in Soft-off mode. Configuration options: [Disabled] [Enabled]
The computer cannot receive or transmit data until the computer and applications are fully running. Thus, connection cannot be made on the first try. Turning an external modem off and then back on while the computer is off causes an initialization string that turns the system power on.
Power On By PCI Devices [Disabled]
When set to [Enabled], this parameter allows you to turn on the system through a PCI LAN or modem card. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Power On By PCIE Devices [Disabled]
When set to [Enabled], this parameter allows you to turn on the system through a PCI Express LAN card. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Power On By PS/2 Keyboard [Disabled]
Allows you to use specific 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. Configuration 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. Configuration options: [Disabled] [Enabled]

2.5.5 Hardware Monitor

Hardware Monitor CPU Temperature [49.5C/121F] CPU Fan Speed [2909RPM] CPU Q-Fan Control [Disabled] Chassis Fan Speed (RPM) [N/A] VCORE Voltage [ 1.288V] 3.3V Voltage [ 3.184V] 5V Voltage [ 4.948V] 12V Voltage [11.985V] +F1 F10 ESC
CPU Temperature [xxxC/xxxF]
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. Configuration options: [Ignored] [xxxC/xxxF]
CPU Fan Speed [xxxxRPM] or [N/A] 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 field shows N/A. Configuration options: [Ignored] [xxxRPM]
CPU Q-Fan Control [Disabled]
Allows you to enable or disable the ASUS Q-Fan feature that smartly adjusts the fan speeds for more efficient system operation. Configuration options: [Disabled] [Enabled]
Chassis Fan Speed [xxxxRPM] or [N/A] 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 chassis, the specific field shows N/A. Configuration options: [Ignored] [N/A]
VCORE Voltage, 3.3V Voltage, 5V Voltage, 12V Voltage
The onboard hardware monitor automatically detects the voltage output through the onboard voltage regulators.

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.
Boot Settings Boot Device Priority Boot Settings Configuration Security
2.6.1 Boot Device Priority
Boot Device Priority 1st Boot Device [1st FLOPPY DRIVE] 2nd Boot Device [Hard Drive] 3rd Boot Device [ATAPI CD-ROM]
1st ~ xxth Boot Device [1st Floppy Drive]
Enter Go to Sub-screen These items specify the boot device priority sequence from the available F1 General Help devices. The number of device items that appears on F10 screen depends the Save and Exit ESC Exit on the number of devices installed in the system. Configuration options: [xxxxx Drive] [Disabled]
Select Screen Select Item
2.6.2 Boot Settings Configuration

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

Exit & Save Changes

Once you are finished 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 confirmation window appears. Select Ok to save changes and exit.
If you attempt to exit the Setup program without saving your changes, the program prompts you with a message asking if you want to save your changes before exiting. Press <Enter> to save the changes while exiting.
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 fields other than System Date, System Time, and Password, the BIOS asks for a confirmation 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 confirmation 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 confirmation 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.
This chapter describes the contents of the support CD that comes with the motherboard package.

Software support

Installing an operating system
This motherboard supports Windows 2000/XP 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. Use the setup procedures presented in this chapter for reference only. Refer to your OS documentation for detailed information. Make sure that you install Windows 2000 Service Pack 4 or the Windows XP Service Pack 1 or later versions before installing the drivers for better compatibility and system stability.

Support CD information

The support CD that came 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 CD are subject to change at any time without notice. Visit the ASUS website(www.asus.com) for updates.
3.2.1 Running the support CD
Place the support CD to the optical drive. The CD automatically displays the Drivers menu if Autorun is enabled in your computer.

Safety information

Electrical safety
To prevent electrical shock hazard, disconnect the power cable from the electrical outlet before relocating the system.
When adding or removing devices to or from the system, ensure that the power cables for the devices are unplugged before the signal cables are connected. If possible, disconnect all power cables from the existing system before you add a device. Before connecting or removing signal cables from the motherboard, ensure that all power cables are unplugged. Seek professional assistance before using an adapter or extension cord. These devices could interrupt the grounding circuit.
Make sure that your power supply is set to the correct voltage in your area. If you are not sure about the voltage of the electrical outlet you are using, contact your local power company. If the power supply is broken, do not try to 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, make sure all cables are correctly connected and the power cables are not damaged. If you detect any damage, contact your dealer immediately. To avoid short circuits, keep paper clips, screws, and staples away from connectors, slots, sockets and circuitry.
Avoid dust, humidity, and temperature extremes. Do not place the product in any area where it may become wet. Place the product on a stable surface. If you encounter technical problems with the product, contact a qualified service technician or your retailer.
This symbol of the crossed out wheeled bin indicates that the product (electrical, electronic equipment, and Mercury -containing button cell battery) should not be placed in municipal waste. Check local regulations for disposal of electronic products.

About this guide

This user guide contains the information you need when installing and configuring the motherboard.
How this guide is organized
This manual contains the following parts: This chapter describes the features of the motherboard and the new technology it supports. This chapter also lists the hardware setup procedures that you have to perform when installing system components. It includes description of the jumpers and connectors on the motherboard. Chapter 2: BIOS setup This chapter tells how to change system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided. Chapter 3: Software support This chapter describes the contents of the support CD that comes with the motherboard package. Chapter 1: Product introduction

Place this side towards the rear of the chassis

Motherboard layout

18.8cm(7.4in)
PS/2KBMS T: Mouse B: Keyboard

ATX12V

PARALLEL PORT

LGA775

DDR2 DIMM_A1(64 bit,240-pin module)

CPU_FAN

DDR2 DIMM_B1(64 bit,240-pin module)

CHA_FAN

8Mb BIOS

EATXPWR

SATA3 SATA4

CLRTC CHASSIS

LAN_USB12

RTM876-660

PCIEX1_1
CR2032 3V Lithium Cell CMOS Power

PCIEX1_16

Super I/O

Intel ICH7

ALC662

SPDIF_OUT

FLOPPY

PS2_USBPWR

PRI_IDE

F_PANEL

SPEAKER

Intel MCH 945GC

24.5cm(9.6in)
Central Processing Unit (CPU)
The motherboard comes with a surface mount LGA775 socket designed for the Core2 Duo/Pentium D/Pentium 4 and Celeron D processors.
Your boxed Intel Core2 Duo/Pentium D/Pentium 4 or Celeron D LGA775 processor package should come with installation instructions for the CPU, fan and heatsink assembly. If the instructions in this section do not match the CPU documentation, follow the latter. Upon purchase of the motherboard, make sure that the PnP cap is on the socket and the socket pins are not bent. Contact your retailer immediately if the PnP cap is missing, or if you see any damage to the PnP cap/socket pins/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 pins resulting from incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP cap.

Installling the CPU

To install a CPU: Locate the CPU socket on the motherboard.
P5GC-MX/GBL CPU Socket 775 Before installing the CPU, make sure that the socket box is facing towards you and the load lever is on your left.
Press the load lever with your thumb (A) and move it to the left (B) until it is released from the retention tab.

To uninstall the CPU heatsink and fan: 1. Disconnect the CPU fan cable from the connector on the motherboard. Rotate each fastener counterclockwise.
Pull up two fasteners at a time in a diagonal sequence to disengage the heatsink and fan assembly from the motherboard.

B A A B

Remove the heatsink and fan assembly from the motherboard.
Rotate each fastener clockwise to reset the orientation.

Narrow end of the groove

The narrow end of the groove should point outward after resetting. (The photo shows the groove shaded for emphasis.)

System memory

Overview
The motherboard comes with two Double Data Rate 2 (DDR2) Dual Inline Memory Modules (DIMM) sockets. A DDR2 module has the same physical dimensions as a DDR DIMM but has a 240-pin footprint compared to the 184-pin DDR DIMM. DDR2 DIMMs are notched differently to prevent installation on a DDR DIMM socket. The figure illustrates the location of the DDR2 DIMM sockets:

DIMMA1 DIMMB1

P5GC-MX/1333
P5GC-MX/1333 240-pin DDR2 DIMM Sockets Channel Channel A Channel B Sockets DIMM_A1 DIMM_B1

128 Pins

112 Pins

Memory configurations

You may install 256 MB, 512 MB, 1 GB, and 2 GB unbuffered non-ECC DDR2 DIMMs into the DIMM sockets.
For dual-channel configuration, the total size of memory module(s) installed per channel must be the same (DIMM_A1 = DIMM_B1). Always install DIMMs with the same CAS latency. For optimum compatibility, it is recommended that you obtain memory modules from the same vendor. Refer to the DDR2 Qualified Vendors List on next page for details. If you are using a Windows 32-bit operating system (e.g. 32-bit Windows XP, 32-bit Windows Vista) without the Physical Address Extension (PAE) support, the system will allocate a certain amount of memory space for system devices. We recommend that you install only a maximum of 3 GB system memory when using a Windows 32-bit version operating system without the PAE. The excess over 3GB of installed memory will not cause any problem; however, the system can not use this excess memory space and the system will display less than the total size of physical memory installed. This motherboard does not support memory modules made up of 128 Mb chips or double-sided x16 memory modules.

Align a DIMM on the socket such that the notch on the DIMM matches the break on the socket.
Firmly insert the DIMM into the socket until the retaining clips snap back in place and the DIMM is properly seated.

Unlocked retaining clip

A DDR2 DIMM is keyed with a notch so that it fits in only one direction. Do not force a DIMM into a socket to avoid damaging the DIMM. The DDR2 DIMM sockets do not support DDR DIMMs. DO not install DDR DIMMs to the DDR2 DIMM sockets.

Removing a DIMM

Follow these steps to remove a DIMM. Simultaneously press the retaining clips outward to unlock the DIMM.
Support the DIMM lightly with your fingers when pressing the retaining clips. The DIMM might get damaged when it flips out with extra force.
Remove the DIMM from the socket.

Expansion slots

In the future, you may need to install expansion cards. The following subsections describe the slots and the expansion cards that they support.
Make sure to unplug the power cord before adding or removing expansion cards. Failure to do so may cause you physical injury and damage motherboard components.

1. 2. 3. 4. 5. 6.

Installing an expansion card
To install an expansion card: Before installing the expansion card, read the documentation that came with it and make the necessary hardware settings for the card. Remove the system unit cover (if your motherboard is already installed in a chassis).
Remove the bracket opposite the slot that you intend to use. Keep the screw for later use. Align the card connector with the slot and press firmly until the card is completely seated on the slot. Secure the card to the chassis with the screw you removed earlier. Replace the system cover.

1. 2. 3.

Configuring an expansion card
After installing the expansion card, configure it by adjusting the software settings. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for information on BIOS setup. Assign an IRQ to the card. Refer to the tables on the next page. Install the software drivers for the expansion card.

IRQ 13 14

Interrupt assignments

Standard Function System Timer Keyboard Controller Re-direct to IRQ#9 Communications Port (COM1)* IRQ holder for PCI steering* Floppy Disk Controller Printer Port (LPT1)* System CMOS/Real Time Clock IRQ holder for PCI steering* IRQ holder for PCI steering* IRQ holder for PCI steering* PS/2 Compatible Mouse Port* Numeric Data Processor Primary IDE Channel
Standard interrupt assignments
* These IRQs are usually available for ISA or PCI devices.
IRQ assignments for this motherboard
PCI slot 1 PCI slot 2 PCI Express x16 slot PCI Express x1 slot Onboard USB controller 1 Onboard USB controller 2 Onboard USB controller 3 Onboard USB controller 4 Onboard USB 2.0 controller Onboard IDE port Onboard HD audio Onboard LAN A B C D E F G H shared non-shared shared shared shared shared shared shared shared shared shared shared
When using PCI cards on shared slots, ensure that the drivers support Share IRQ or that the cards do not need IRQ assignments. Otherwise, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable.

PCI slots

The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that comply with PCI specifications. The figure shows a LAN card installed on a PCI slot.
If you install a PCI graphics card, we recommend that you remove the onboard graphics card driver.

PCI Express x1

This motherboard supports PCI Express x1 network cards, SCSI cards and other cards that comply with the PCI Express specifications. The figure shows a network card installed on the PCI Express x1 slot.

PCI Express x16

This motherboard supports one PCI Express x16 graphics card. The figure shows a graphics card installed on the PCI Express x16 slot.

Jumpers

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. Turn OFF the computer and unplug the power cord. 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. Re-install the battery. Plug the power cord and turn ON the computer. Remove the onboard battery.

When the correct BIOS file is found, EZ Flash 2 performs the BIOS update process and automatically reboots the system when done.
This function can support devices such as USB flash disk, or floppy disk with FAT 32/16 format and single partition only.
DO NOT shut down or reset the system while updating the BIOS to prevent system boot failure!

AFUDOS utility

The AFUDOS utility allows you to update the BIOS file in DOS environment using a bootable floppy disk with the updated BIOS file. This utility also allows you to copy the current BIOS file that you can use as backup when the BIOS fails or gets corrupted during the updating process.

Copying the current BIOS

To copy the current BIOS file using the AFUDOS utility:
Make sure that the floppy disk is not write-protected and has at least 1024KB free space to save the file. The succeeding BIOS screens are for reference only. The actual BIOS screen displays may not be same as shown.
Copy the AFUDOS utility (afudos.exe) from the motherboard support CD to the bootable floppy disk you created earlier. Boot the system in DOS mode, then at the prompt type: afudos /o[filename]
where the [filename] is any user-assigned filename not more than eight alphanumeric characters for the main filename and three alphanumeric characters for the extension name.
A:\>afudos /oOLDBIOS1.rom

Main filename

Extension name
Press <Enter>. The utility copies the current BIOS file to the floppy disk.
A:\>afudos /oOLDBIOS1.rom AMI Firmware Update Utility - Version 1.19(ASUS V2.07(03.11.24BB)) Copyright (C) 2002 American Megatrends, Inc. All rights reserved. Reading flash.. done Write to file. ok A:\>
The utility returns to the DOS prompt after copying the current BIOS file.

Updating the BIOS file

To update the BIOS file using the AFUDOS utility: Visit the ASUS website (www.asus.com) and download the latest BIOS file for the motherboard. Save the BIOS file to a bootable floppy disk.
Make sure to choose the right BIOS files from ASUS website according to the version of your mother board. Refer to your Printed Circuit Board (PCB) for version information. Write the BIOS filename on a piece of paper. You need to type the exact BIOS filename at the DOS prompt.

2. 3.

Copy the AFUDOS utility (afudos.exe) from the motherboard support CD to the bootable floppy disk you created earlier. Boot the system in DOS mode, then at the prompt type: afudos /i[filename]
where [filename] is the latest or the original BIOS file on the bootable floppy disk.
A:\>afudos /iP5GCMXGB.ROM

Select the ASUS FTP site nearest you to avoid network traffic, or click Auto Select. Click Next.
From the FTP site, select the BIOS version that you wish to download. Click Next. Follow the screen instructions to complete the update process.
The ASUS Update utility is capable of updating itself through the Internet. Always update the utility to avail all its features.
Updating the BIOS through a BIOS file
To update the BIOS through a BIOS file: 1. 2. Launch the ASUS Update utility from the Windows desktop by clicking Start > Programs > ASUS > ASUSUpdate > ASUSUpdate. The ASUS Update main window appears. Select Update BIOS from a file option from the dropdown menu, then click Next.
Locate the BIOS file from the Open window, then click Open. Follow the screen instructions to complete the update process.

BIOS setup program

This motherboard supports a programmable firmware chip that you can update using the provided utility described in section 2.1 Managing and updating your BIOS. Use the BIOS Setup program when you are installing a motherboard, reconfiguring your system, or prompted to Run Setup. This section explains how to configure your system using this utility. Even if you are not prompted to use the Setup program, you can change the configuration of your computer in the future. For example, you can enable the security password feature or change the power management settings. This requires you to reconfigure your system using the BIOS Setup program so that the computer can recognize these changes and record them in the CMOS RAM of the firmware hub. The firmware hub on the motherboard stores the Setup utility. When you start up the computer, the system provides you with the opportunity to run this program. Press <Del> during the Power-On-Self-Test (POST) to enter the Setup utility; otherwise, POST continues with its test routines. If you wish to enter Setup after POST, restart the system by pressing <Ctrl+Alt+Delete>, or by pressing the reset button on the system chassis. You can also restart by turning the system off and then back on. Do this last option only if the first two failed. The Setup program is designed to make it as easy to use as possible. Being a menu-driven program, it lets you scroll through the various sub-menus and make your selections from the available options using the navigation keys.
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 Default Settings 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 (www.asus.com) to download the latest BIOS file for this motherboard. Make sure to choose the right BIOS files according to the version of your mother board. Refer to your Printed Circuit Board (PCB) for version information.

Menu items

BIOS menu screen

Menu bar

Advanced Power

Configuration fields

BIOS SETUP UTILITY Boot Tools [19:34:30] [Mon 11/19/2007] [1.44M, 3.5 in] :[Not :[Not :[Not :[Not :[Not :[Not Detected] Detected] Detected] Detected] Detected] Detected] Exit

General help

System Time System Date Legacy Diskette A Primary IDE Master Primary IDE Slave Third IDE Master Third IDE Slave Fourth IDE Master Fourth IDE Slave IDE Configuration
Use [ENTER], [TAB] or [SHIFT-TAB] to select a field. Use [+] or [-] to configure system time.

System Information

Select Screen Select Item +- Change Field Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit
v02.58 (C)Copyright 1985-2007, American Megatrends, Inc.

Sub-menu items

Navigation keys

Main Power

For changing the basic system configuration For changing the advanced power management (APM) configuration For changing the system boot configuration For configuring options for special functions For changing the advanced system settings
The menu bar on top of the screen has the following main items: Advanced
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.
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.
Main Advanced System Time System Date Legacy Diskette A Primary IDE Master Primary IDE Slave Third IDE Master Third IDE Slave Fourth IDE Master Fourth IDE Slave IDE Configuration Power BIOS SETUP UTILITY Boot Tools Exit [19:34:30] [Mon 11/19/2007] [1.44M, 3.5 in] :[Not Detected] :[Not Detected] :[Not Detected] :[Not Detected] :[Not Detected] :[Not Detected] Select Screen Select Item +- Change Field EnterGo to Sub Screen F1 General Help F10 Save and Exit ESC Exit Use [ENTER], [TAB] or [SHIFT-TAB] to select a field. Use [+] or [-] to configure system time.
The highlighted item on the menu bar displays the specific items for that menu. For example, selecting Main shows the Main menu items. The other items (Advanced, Power, Boot, and Exit) on the menu bar have their respective menu items.

Main menu items

A solid triangle before each item on any menu screen means that the item has a sub-menu. To display the sub-menu, select the item and press <Enter>.
These fields show the values for the menu items. If an item is user- configurable, you can change the value of the field opposite the item. You cannot select an item that is not user-configurable. A configurable field is enclosed in brackets, and is highlighted when selected. To change the value of a field, select it then press <Enter> to display a list of options. Refer to 2.2.7 Pop-up window.

Main

BIOS SETUP UTILITY Boot Tools
Exit Adjust system frequency/voltage
JumperFree Configuration USB Configuration CPU Configuration Chipset Onboard Devices Configuration PCIPnP

JumperFree Configuration

Configure System Frequency/Voltage AI Overclocking [Auto]

AI Overclocking [Auto]

Allows selection of CPU frequency and auto adjustment of relevant parameters. Frequencies higher than CPU manufacturer recommends are not guaranteed to be stable. If the system becomes unstable, return to the default. Configuration options: [Manual] [Auto]
The following item appears 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 133 to 400. Refer to the table below for the correct Front Side Bus and CPU External Frequency settings. FSB/CPU External Frequency Synchronization
Front Side Bus FSB 1066 FSB 800 FSB 667 CPU External Frequency 266 MHz 200 MHz 133 MHz

DRAM Frequency [Auto]

Allows you to set the DDR2 operating frequency. Configuration options: [Auto] [400MHz] [533 MHz] [667 MHz]
Selecting a very high DRAM frequency may cause the system to become unstable! If this happens, revert to the default setting.
PCI Express Frequency [Auto]
Allows you to select PCI express frequency. Configuration options: [Auto] [90] [91] [92] [93] [94] [95] [96] [97] [98] [99] [100] [101] [102] [103] [104]

USB Configuration

The items in this menu allows you to change the USB-related features. Select an item then press <Enter> to display the configuration options.
USB Configuration Module Version - 2.24.3-13.4 USB Devices Enabled: None USB Function [Disabled]
The Module Version and USB Devices Enabled items show the auto-detected values. If no USB device is detected, the item shows None.

USB Function [Disabled]

Allows you to enable or disable the USB function. Configuration options: [Disabled] [Enabled]
The following items show when the USB Function item is set to [Enabled].

Legacy USB Support [Auto]
Allows you to enable or disable support for USB devices on legacy operating systems (OS). 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. Configuration options: [Disabled] [Enabled] [Auto]
USB 2.0 Controller [Enabled]
Allows you to enable or disable the USB 2.0 controller. Configuration options: [Enabled] [Disabled]
USB 2.0 Controller Mode [HiSpeed]
Allows you to configure the USB 2.0 controller in HiSpeed (480 Mbps) or Full Speed (12 Mbps). Configuration options: [FullSpeed] [HiSpeed]
BIOS EHCI Hand-Off [Enabled]
Allows you to enable support for operating systems without an EHCI handoff feature. Configuration options: [Disabled] [Enabled]

CPU Configuration

The items in this menu show the CPU-related information that the BIOS automatically detects.
Advanced Configure advanced CPU settings Manufacturer: Brand String: Frequency : FSB Speed : Cache L1 Cache L2 Intel Intel(R) Core(TM)2 Duo CPU @ 1.86GHz 1.86MHz 1066MHz Auto Manual BIOS SETUP UTILITY

Options

: 64 KB : 2048 KB Select Screen Select Item Change Field +Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit
Ratio Status: Unlocked (Max:07, Min:06) Ratio Actual Value : 7 CPU ratio adjustment [Auto] C1E Support [Enabled] Max CPUID Value Limit: [Disabled] Vanderpool Technology [Enabled] CPU TM function [Enabled] Execute Disable Bit [Enabled] PECI [Disabled]
CPU ratio adjustment [Auto]
Allows you to enable or disable the CPU ratio adjustment function. Configuration options: [Auto] [Manual].
The following items appear only when this item is set to [Manual].

Ratio CMOS Setting: [7]

Sets the ratio between CPU Core Clock and the FSB Frequency.

C1E Support [Enabled]

Enables or disables Intel CPU Enhanced Halt (C1E) function, a CPU powersaving function in system halt state. When enabled, the CPU core frequency and voltage is reduced during system halt state to decrease power consumption. Configuration options: [Disabled] [Enabled]

TV Standard [VBIOS-Default]
Configuration options: [VBIOS-Default] [NTSC] [PAL] [SECAM] [SMPTE240M] [ITU-R television] [SMPTE295M] [SMPTE296M] [ETA-770.2] [EIA-770.3]

PEG Buffer Length [Auto]

Sets PCI Express graphics card buffer length. Configuration options: [Auto] [Long] [Short]

Link Latency [Auto]

Sets link latency. Configuration options: [Auto] [Slow] [Normal]

PEG Root Control [Auto]

Enables, disables or set to Auto of the link latency. Configuration options: [Auto] [Disabled] [Enabled]

Slot Power [Auto]

Sets the slot power. Configuration options: [Auto] [Light] [Normal] [Heavy] [Heavier]
High Priority Port Select [Disabled]
Selects the high priority port. Configuration options: [Disabled] [PCI Express Port 2]
Onboard Devices Configuration
Configure Win627DHG Super IO Chipset HD Audio Controller [Enabled] Front Panel Support Type [HD Audio] Onboard PCIEX Gigabit LAN [Enabled] LAN Option ROM [Disabled] Serial Port1 Address [3F8/IRQ4] Parallel Port Address [378] Parallel Port Mode [ECP] ECP Mode DMA Channel [DMA3] Parallel Port IRQ [IRQ7]
Enable or Disable High Definition Audio Controller
Select Screen Select Item Change Field +Enter Go to Sub Screen F1 General Help F10 Save and Exit ESC Exit v02.58 (C)Copyright 1985-2007, American Megatrends, Inc.
HD Audio Controller [Enabled]
Enables or disables the Azalia/AC97 CODEC. Configuration options: [Enabled] [Disabled]
Front Panel Support Type [AC97]
Allows you to set the front panel audio connector (AAFP) mode to legacy AC97 or high-definition audio depending on the audio standard that the front panel audio module supports. Configuration options: [AC97][HD Audio]
Onboard PCIEX Gigabit LAN [Enabled]
Allows you to enable or disable the onboard PCIe Gigabit LAN controller. Configuration options: [Enabled] [Disabled]
LAN Option ROM [Disabled]
Allows you to enable or disable the option ROM in the onboard LAN controller. This item appears only when the Onboard LAN item is set to Enabled. Configuration options: [Disabled] [Enabled]
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]
Parallel Port Address [378]
Allows you to select the Parallel Port base addresses. Configuration options: [Disabled] [378] [278] [3BC]

Parallel Port Mode [ECP]

Allows you to select the Parallel Port mode. Configuration 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. Configuration options: [DMA0] [DMA1] [DMA3]

Power menu

The Power menu items allow you to change the settings for the Advanced Configuration and Power Interface (ACPI) and the Advanced Power Management (APM). Select an item then press <Enter> to display the configuration options.
Main Advanced Power BIOS SETUP UTILITY Boot Tools Exit Select the ACPT state used for System Suspend.
Suspend Mode [Auto] ACPI 2.0 Support [Disabled] ACPI APIC support [Enabled] APM Configuration Hardware Monitor

Suspend Mode [Auto]

Allows you to select the Advanced Configuration and Power Interface (ACPI) state to be used for system suspend. Configuration options: [S1 (POS) Only] [S3 Only] [Auto]
ACPI 2.0 Support [Disabled]
Allows you to add more tables for Advanced Configuration and Power Interface (ACPI) 2.0 specifications. Configuration options: [Disabled] [Enabled]
ACPI APIC Support [Enabled]
Allows you to enable or disable the Advanced Configuration and Power Interface (ACPI) support in the Application-Specific Integrated Circuit (ASIC). When set to Enabled, the ACPI APIC table pointer is included in the RSDT pointer list. Configuration options: [Disabled] [Enabled]

APM Configuration

Power BIOS SETUP UTILITY
APM Configuration Restore on AC Power Loss [Power Off] Power On By RTC Alarm [Disabled] Power On By External Modems [Disabled] Power On By PCI Devices [Disabled] Power On By PCIE Devices [Disabled] Power On By PS/2 Keyboard [Disabled] Power On By PS/2 Mouse [Disabled]
Go into On/Off or Suspend when Power button is pressed.
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 [Enabled]
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. Configuration options: [Disabled] [Enabled]

Power On By External Modems [Disabled]
This allows either settings of [Enabled] or [Disabled] for powering up the computer when the external modem receives a call while the computer is in Soft-off mode. Configuration options: [Disabled] [Enabled]
The computer cannot receive or transmit data until the computer and applications are fully running. Thus, connection cannot be made on the first try. Turning an external modem off and then back on while the computer is off causes an initialization string that turns the system power on.
Power On By PCI Devices [Disabled]
When set to [Enabled], this parameter allows you to turn on the system through a PCI LAN or modem card. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Power On By PCIE Devices [Disabled]
When set to [Enabled], this parameter allows you to turn on the system through a PCI Express LAN card. This feature requires an ATX power supply that provides at least 1A on the +5VSB lead. Configuration options: [Disabled] [Enabled]
Power On By PS/2 Keyboard [Disabled]
Allows you to use specific 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. Configuration 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. Configuration options: [Disabled] [Enabled]

Hardware Monitor

Hardware Monitor CPU Temperature [49.5C/121F] CPU Fan Speed [2909RPM] CPU Q-Fan Control [Disabled] Chassis Fan Speed (RPM) [N/A] VCORE Voltage [ 1.288V] 3.3V Voltage [ 3.184V] 5V Voltage [ 4.948V] 12V Voltage [11.985V]

CPU Temperature

CPU Temperature [xxxC/xxxF]
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. Configuration options: [Ignored] [xxxC/xxxF]
CPU Fan Speed [xxxxRPM] or [N/A] 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 field shows N/A. Configuration options: [Ignored] [xxxRPM]
CPU Q-Fan Control [Disabled]
Allows you to enable or disable the ASUS Q-Fan feature that smartly adjusts the fan speeds for more efficient system operation. Configuration options: [Disabled] [Enabled]
Chassis Fan Speed [xxxxRPM] or [N/A] 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 chassis, the specific field shows N/A. Configuration options: [Ignored] [N/A]