Page 2
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.
Contents Notices ....................vi Safety information ................vii Operation safety ................vii P5GDC specifications summary ............viii Chapter 1: Chapter 1: Chapter 1: Hardware information Hardware information Hardware information Chapter 1: Chapter 1: Hardware information Hardware information Before you proceed .............. 1-2 Motherboard overview ............
Page 4
Creating a bootable floppy disk ......2-2 2.1.2 ASUS EZ Flash utility ..........2-3 2.1.3 AFUDOS utility ............2-4 2.1.4 ASUS CrashFree BIOS 2 utility ........ 2-6 BIOS setup program ............2-10 2.2.1 BIOS menu screen ..........2-11 2.2.2 Menu bar ............... 2-11 2.2.3...
Page 5
Contents Power menu ................ 2-27 2.5.1 Suspend Mode ............2-27 2.5.2 Repost Video on S3 Resume ........ 2-27 2.5.3 ACPI 2.0 Support ..........2-27 2.5.4 ACPI APIC Support ..........2-27 2.5.5 APM Configuration ..........2-28 2.5.6 Hardware Monitor ..........2-30 Boot menu ................
Notices Federal Communications Commission Statement Federal Communications Commission Statement Federal Communications Commission Statement Federal Communications Commission Statement 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 •...
Safety information Electrical safety Electrical safety Electrical safety Electrical safety 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.
P5GDC specifications summary C P U C P U C P U LGA775 socket for Intel ® Pentium ® 4/Celeron processor C P U C P U Compatible with Intel ® PCG 04A and 04B processors Supports Intel ® Hyper-Threading Technology ®...
Page 9
P5GDC specifications summary R e a r p a n e l R e a r p a n e l R e a r p a n e l R e a r p a n e l R e a r p a n e l...
Page 11
This chapter 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. Hardware information...
1.2.4 1.2.4 1.2.4 Layout Contents Layout Contents Layout Contents 1.2.4 1.2.4 Layout Contents Layout Contents S l o t s S l o t s S l o t s S l o t s S l o t s P a g e P a g e P a g e...
Page 16
I n t e r n a l c o n n e c t o r s I n t e r n a l c o n n e c t o r s I n t e r n a l c o n n e c t o r s P a g e P a g e P a g e...
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. •...
Page 18
Press the load lever with your thumb (A), then move it to the left (B) until it is released from the retention tab. R e t e n t i o n t a b R e t e n t i o n t a b R e t e n t i o n t a b R e t e n t i o n t a b R e t e n t i o n t a b...
Page 19
Close the load plate (A), then push the load lever (B) until it snaps into the retention tab. The CPU fits in only one correct orientation. DO NOT force the CPU into the socket to prevent bending the connectors on the socket and damaging the CPU! Notes on Intel Notes on Intel...
1.3.2 1.3.2 Installling the CPU heatsink and fan Installling the CPU heatsink and fan 1.3.2 1.3.2 1.3.2 Installling the CPU heatsink and fan Installling the CPU heatsink and fan Installling the CPU heatsink and fan The Intel ® Pentium ® 4 LGA775 processor requires a specially designed heatsink and fan assembly to ensure optimum thermal condition and performance.
Page 21
When the fan and heatsink assembly is in place, connect the CPU fan cable to the connector on the motherboard labeled CPU_FAN1. CPU_FAN1 P5GDC Do not forget to connect the CPU fan connector! Hardware monitoring errors can occur if you fail to plug this connector.
DDR_A2 DDR_A1 P5GDC DIMM sockets d o n o t u s e D D R a n d D D R 2 d o n o t u s e D D R a n d D D R 2...
Page 23
Recommended DDR memory configurations Recommended DDR memory configurations Recommended DDR memory configurations Recommended DDR memory configurations Recommended DDR memory configurations For dual-channel configuration, the total size of memory module(s) installed per channel must be the same to ensure optimum performance. (DDR_A1 + DDR_A2 = DDR_B1 +DDR_B2) C h a n n e l C h a n n e l...
Page 24
DDR (400 MHz) Qualified Vendors List DDR (400 MHz) Qualified Vendors List DDR (400 MHz) Qualified Vendors List DDR (400 MHz) Qualified Vendors List DDR (400 MHz) Qualified Vendors List D I M M s u p p o r t D I M M s u p p o r t D I M M s u p p o r t D I M M s u p p o r t...
Page 25
DDR (400 MHz) Qualified Vendors List DDR (400 MHz) Qualified Vendors List DDR (400 MHz) Qualified Vendors List DDR (400 MHz) Qualified Vendors List DDR (400 MHz) Qualified Vendors List D I M M s u p p o r t D I M M s u p p o r t D I M M s u p p o r t D I M M s u p p o r t...
Page 26
DDR2 (533MHz) Qualified Vendors List DDR2 (533MHz) Qualified Vendors List DDR2 (533MHz) Qualified Vendors List DDR2 (533MHz) Qualified Vendors List DDR2 (533MHz) Qualified Vendors List D I M M s u p p o r t D I M M s u p p o r t D I M M s u p p o r t D I M M s u p p o r t D I M M s u p p o r t...
Page 27
DDR2-533 with 600 MHz capability (overclocking) DDR2-533 with 600 MHz capability (overclocking) DDR2-533 with 600 MHz capability (overclocking) DDR2-533 with 600 MHz capability (overclocking) DDR2-533 with 600 MHz capability (overclocking) D I M M s u p p o r t D I M M s u p p o r t D I M M s u p p o r t D I M M s u p p o r t...
1.4.3 1.4.3 1.4.3 Installing a DDR DIMM Installing a DDR DIMM Installing a DDR DIMM 1.4.3 1.4.3 Installing a DDR DIMM Installing a DDR DIMM Make sure to unplug the power supply before adding or removing DIMMs or other system components. Failure to do so may cause severe damage to both the motherboard and the components.
1.4.5 1.4.5 Installing a DDR2 DIMM Installing a DDR2 DIMM 1.4.5 1.4.5 1.4.5 Installing a DDR2 DIMM Installing a DDR2 DIMM Installing a DDR2 DIMM Unplug the power supply before adding or removing DIMMs or other system components. Failure to do so can cause severe damage to both the motherboard and the components.
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. 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.
1.5.3 1.5.3 1.5.3 1.5.3 1.5.3 Interrupt assignments Interrupt assignments Interrupt assignments Interrupt assignments Interrupt assignments Standard interrupt assignments Standard interrupt assignments Standard interrupt assignments Standard interrupt assignments Standard interrupt assignments I R Q I R Q I R Q I R Q I R Q P r i o r i t y P r i o r i t y...
1.5.4 1.5.4 1.5.4 PCI slots PCI slots PCI slots 1.5.4 1.5.4 PCI slots 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.
Normal Clear CMOS (Default) P5GDC Clear RTC RAM You do not need to clear the RTC when the system hangs due to overclocking. For system failure due to overclocking, use the C.P.R. (CPU Parameter Recall) feature. Shut down and reboot the system so the BIOS can automatically reset parameter settings to default values.
Page 34
+5VSB (Default) P5GDC USBPW56 USBPW78 +5VSB P5GDC USB device wake-up (Default) • The USB device wake-up feature requires a power supply that can provide 500mA on the +5VSB lead for each USB port; otherwise, the system would not power up.
Page 35
BIOS. KBPWR1 +5VSB (Default) P5GDC P5GDC Keyboard power setting A S U S P 5 G D C A S U S P 5 G D C 1 - 2 5 1 - 2 5 A S U S P 5 G D C...
Connectors 1.7.1 1.7.1 1.7.1 1.7.1 1.7.1 Rear panel connectors Rear panel connectors Rear panel connectors Rear panel connectors Rear panel connectors 1 . 1 . P S / 2 m o u s e p o r t ( g r e e n ) . P S / 2 m o u s e p o r t ( g r e e n ) .
Page 37
8 . 8 . M i c r o p h o n e p o r t ( p i n k ) . M i c r o p h o n e p o r t ( p i n k ) . M i c r o p h o n e p o r t ( p i n k ) .
PIN 1 NOTE: Orient the red markings on the floppy ribbon cable to PIN 1. P5GDC Floppy disk drive connector 1 - 2 8 1 - 2 8 C h a p t e r 1 : H a r d w a r e i n f o r m a t i o n...
Page 39
NOTE: Orient the red markings P5GDC (usually zigzag) on the IDE ribbon cable to PIN 1. P5GDC IDE connector A S U S P 5 G D C A S U S P 5 G D C 1 - 2 9...
SATA1 SATA2 P5GDC SATA connectors I m p o r t a n t n o t e s o n S e r i a l A T A I m p o r t a n t n o t e s o n S e r i a l A T A...
Page 41
CHA_FAN1 Rotation P5GDC Fan connectors +12V Only the CHA_FAN1 connector supports the ASUS Q-Fan 2 feature. A S U S P 5 G D C A S U S P 5 G D C 1 - 3 1 1 - 3 1...
Page 42
P5GDC PIN 1 P5GDC Serial port connector 6 . 6 . U S B c o n n e c t o r s ( 1 0 - 1 p i n U S B 5 6 , U S B 7 8 )
Page 43
+5 Volts PSON# Ground Ground +3 Volts -12 Volts P5GDC ATX power connectors +3 Volts +3 Volts A S U S P 5 G D C A S U S P 5 G D C 1 - 3 3 1 - 3 3...
Page 44
P5GDC P5GDC CD audio connector 9 . 9 . G A M E / M I D I p o r t c o n n e c t o r ( 1 6 - 1 p i n G A M E 1 )
Page 45
CHASSIS1 P5GDC (Default) P5GDC Chassis intrusion connector A S U S P 5 G D C A S U S P 5 G D C 1 - 3 5 1 - 3 5...
Page 46
Azalia-compliant pin definition Legacy AC’97-compliant pin definition P5GDC AAFP P5GDC Analog front panel connector • We recommend that you connect a high-definition front panel audio module to this connector to avail of the motherboard’s high-definition audio capability. • By default, this connector is set to legacy AC`97 audio. If you want...
Page 47
Requires an ATX power supply. P5GDC System panel connector H a r d d i s k d r i v e a c t i v i t y ( 2 - p i n I D E _ L E D ) H a r d d i s k d r i v e a c t i v i t y ( 2 - p i n I D E _ L E D ) •...
Page 48
1 - 3 8 1 - 3 8 C h a p t e r 1 : H a r d w a r e i n f o r m a t i o n C h a p t e r 1 : H a r d w a r e i n f o r m a t i o n 1 - 3 8 1 - 3 8 1 - 3 8...
Page 49
This chapter tells how to change the system settings through the BIOS Setup menus. Detailed descriptions of the BIOS parameters are also provided. BIOS setup...
Refer to the corresponding sections for details on these utilities. Save a copy of the original motherboard BIOS file to a bootable floppy disk in case you need to restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update or AFUDOS utilities. 2.1.1 2.1.1 2.1.1...
ASUS EZ Flash utility ASUS EZ Flash utility The ASUS EZ Flash feature allows you to update the BIOS without having to go through the long process of booting from a floppy disk and using a DOS-based utility. The EZ Flash utility is built into the BIOS chip so it is accessible by pressing <Alt>...
2.1.3 2.1.3 AFUDOS utility AFUDOS utility 2.1.3 2.1.3 2.1.3 AFUDOS utility AFUDOS utility 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.
Page 53
A:\>afudos /iP5GDCSI.ROM The utility verifies the file and starts updating the BIOS. A:\>afudos /iP5GDCSI.ROM AMI Firmware Update Utility - Version 1.19(ASUS V2.07(03.11.24BB)) Copyright (C) 2003 American Megatrends, Inc. All rights reserved. WARNING!! Do not turn off power during flash BIOS Reading file ..
ASUS CrashFree BIOS 2 utility ASUS CrashFree BIOS 2 utility The ASUS CrashFree BIOS 2 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 update a corrupted BIOS file using the motherboard support CD or the floppy disk that contains the updated BIOS file.
Page 55
The utility displays the following message and automatically checks the floppy disk for the original or updated BIOS file. Bad BIOS checksum. Starting BIOS recovery... Checking for floppy... When found, the utility reads the BIOS file and starts flashing the corrupted BIOS file.
Page 56
When no floppy disk is found, the utility automatically checks the optical drive for the original or updated BIOS file. The utility then updates the corrupted BIOS file. Bad BIOS checksum. Starting BIOS recovery... Checking for floppy... Floppy not found! Checking for CD-ROM...
Page 57
A S U S U p d a t e A S U S U p d a t e A S U S U p d a t e. The ASUS Update main window appears. A S U S U p d a t e...
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.
2.2.1 2.2.1 BIOS menu screen BIOS menu screen 2.2.1 2.2.1 2.2.1 BIOS menu screen BIOS menu screen BIOS menu screen M e n u i t e m s M e n u i t e m s M e n u i t e m s M e n u i t e m s M e n u i t e m s M e n u b a r...
2.2.4 2.2.4 Menu items Menu items 2.2.4 2.2.4 2.2.4 Menu items Menu items Menu items Use [ENTER], [TAB] or The highlighted item on the menu System Time [02:01:19] [SHIFT-TAB] to select System Date [Mon 08/16/2004] a field. Legacy Diskette A [1.44M, 3.5 in] bar displays the specific items for Primary IDE Master...
Main menu When you enter the BIOS Setup program, the Main menu screen appears, giving you an overview of the basic system information. Refer to section “2.2.1 BIOS menu screen” for information on the menu screen items and how to navigate through them. Use [ENTER], [TAB] or System Time [02:01:19]...
2.3.4 2.3.4 2.3.4 2.3.4 2.3.4 Primary, Third, and Fourth IDE Master/Slave Primary, Third, and Fourth IDE Master/Slave Primary, Third, and Fourth IDE Master/Slave Primary, Third, and Fourth IDE Master/Slave Primary, Third, and Fourth IDE Master/Slave While entering Setup, the BIOS automatically detects the presence of IDE devices.
PIO Mode [Auto] PIO Mode [Auto] PIO Mode [Auto] PIO Mode [Auto] PIO Mode [Auto] Selects the PIO mode. Configuration options: [Auto] [0] [1] [2] [3] [4] DMA Mode [Auto] DMA Mode [Auto] DMA Mode [Auto] DMA Mode [Auto] DMA Mode [Auto] Selects the DMA mode.
Page 64
When set in Advanced Host Controller Interface (AHCI) or RAID mode, the SATA controller is set to Native mode. Configuration options: [Standard IDE] [AHCI] [RAID Mode] Onboard IDE Operate Mode [Enhanced Mode] Onboard IDE Operate Mode [Enhanced Mode] Onboard IDE Operate Mode [Enhanced Mode] Onboard IDE Operate Mode [Enhanced Mode] Onboard IDE Operate Mode [Enhanced Mode] Allows selection of the IDE operation mode depending on the operating...
IDE Detect Time Out [35] IDE Detect Time Out [35] IDE Detect Time Out [35] IDE Detect Time Out [35] 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 2.3.6 2.3.6...
Advanced menu The Advanced menu items allow you to change the settings for the CPU and other system devices. Take caution when changing the settings of the Advanced menu items. Incorrect field values can cause the system to malfunction. Adjust system LAN Cable Status frequency/voltage USB Configuration...
2.4.2 2.4.2 2.4.2 USB Configuration USB Configuration USB Configuration 2.4.2 2.4.2 USB Configuration USB Configuration The items in this menu allow you to change the USB-related features. Select an item then press <Enter> to display the configuration options. Enables USB host USB Configuration controllers.
2.4.3 2.4.3 2.4.3 CPU Configuration CPU Configuration CPU Configuration 2.4.3 2.4.3 CPU Configuration CPU Configuration The items in this menu show the CPU-related information that the BIOS automatically detects. Configure advanced CPU Settings Sets the ratio between CPU Core Clock and the Manufacturer : Intel FSB Frequency.
Enhanced C1 Control [Auto] Enhanced C1 Control [Auto] Enhanced C1 Control [Auto] Enhanced C1 Control [Auto] Enhanced C1 Control [Auto] When set to [Auto], the BIOS will automatically check the CPU’s capability to enable the C1E support. In C1E mode, the CPU power consumption is lower when idle.
Page 70
DRAM RAS# Precharge [4 Clocks] Controls the idle clocks after issuing a precharge command to the DDR SDRAM. Configuration options: [2 Clocks] [3 Clocks] [4 Clocks] [5 Clocks] DRAM RAS# to CAS# Delay [4 Clocks] Controls the latency between the DDR SDRAM active command and the read/write command.
2.4.5 2.4.5 Onboard Devices Configuration Onboard Devices Configuration 2.4.5 2.4.5 2.4.5 Onboard Devices Configuration Onboard Devices Configuration Onboard Devices Configuration Configure Win627EHF Super IO Chipset Enable or disable the High Definition Audio HD Audio Controller [Enabled] controller. Front Panel Support Type [AC97] Onboard LAN [Enabled]...
Page 72
E C P M o d e D M A C h a n n e l [ D M A 3 ] E C P M o d e D M A C h a n n e l [ D M A 3 ] E C P M o d e D M A C h a n n e l [ D M A 3 ] E C P M o d e D M A C h a n n e l [ D M A 3 ] E C P M o d e D M A C h a n n e l [ D M A 3 ]...
2.4.6 2.4.6 2.4.6 PCI PnP PCI PnP PCI PnP 2.4.6 2.4.6 PCI PnP 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.
Page 74
PCI IDE BusMaster [Enabled] PCI IDE BusMaster [Enabled] PCI IDE BusMaster [Enabled] PCI IDE BusMaster [Enabled] PCI IDE BusMaster [Enabled] Allows BIOS to use PCI bus mastering when reading/writing to IDE devices. Configuration options: [Disabled] [Enabled] IRQ-xx assigned to [PCI Device] IRQ-xx assigned to [PCI Device] IRQ-xx assigned to [PCI Device] IRQ-xx assigned to [PCI Device]...
Power menu The Power menu items allow you to change the settings for the ACPI and Advanced Power Management (APM). Select an item then press <Enter> to display the configuration options. Select the ACPI state Suspend Mode [Auto] used for System Repost Video on S3 Resume [No] Suspend.
2.5.5 2.5.5 2.5.5 2.5.5 2.5.5 APM Configuration APM Configuration APM Configuration APM Configuration APM Configuration APM Configuration Go into On/Off or Suspend when Power Restore on AC Power Loss [Power Off] button is pressed. Power On By RTC Alarm [Disabled] Power On By External Modems [Disabled] Power On By PCI Devices...
Page 77
Power On By PCI Devices [Disabled] Power On By PCI Devices [Disabled] Power On By PCI Devices [Disabled] Power On By PCI Devices [Disabled] 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.
CPU Q-Fan Control [Disabled] 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. When this field is set to [Enabled], the three succeeding items appear. Configuration...
Page 79
Chassis Q-Fan Control [Disabled] Chassis Q-Fan Control [Disabled] Chassis Q-Fan Control [Disabled] Allows you to enable or disable the ASUS Q-Fan feature that smartly adjusts the chassis fan speeds for more efficient system operation. Configuration options: [Disabled] [Enabled] Power Fan Speed [Ignored] or [N/A]...
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. APM Configuration Specifies the Boot Device Boot Priority Boot Device Priority sequence. Boot Settings Configuration Security 2.6.1 2.6.1 2.6.1...
This allows you to enable or disable the full screen logo display feature. Configuration options: [Disabled] [Enabled] Set this item to [Enabled] to use the ASUS MyLogo™ feature. Add On ROM Display Mode [Force BIOS] Add On ROM Display Mode [Force BIOS]...
Hit ‘DEL’ Message Display [Enabled] Hit ‘DEL’ Message Display [Enabled] Hit ‘DEL’ Message Display [Enabled] Hit ‘DEL’ Message Display [Enabled] 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] Interrupt 19 Capture [Disabled] Interrupt 19 Capture [Disabled] Interrupt 19 Capture [Disabled]...
Page 83
If you forget your BIOS password, you can clear clear it by erasing the CMOS Real Time Clock (RTC) RAM. See section “1.6 Jumpers” for information on how to erase the RTC RAM. After you have set a supervisor password, the other items appear to allow you to change other security settings.
The message “Password Installed” appears after you set your password successfully. To change the user password, follow the same steps as in setting a user password. Clear User Password Clear User Password Clear User Password Clear User Password Clear User Password Select this item to clear the user password.
Page 85
Exit & Save Changes Exit & Save Changes Exit & Save Changes Exit & Save Changes 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.
Page 86
2 - 3 8 2 - 3 8 C h a p t e r 2 : B I O S s e t u p C h a p t e r 2 : B I O S s e t u p 2 - 3 8 2 - 3 8 2 - 3 8...