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Motherboard Specifications, P5BW-LA (Buckeye)

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Motherboard specifications table

Part / FeatureSpecification / Support
Motherboard description
  • Motherboard manufacturer's name: ASUS P5BW-LA
  • HP/Compaq name: Buckeye-GL8E
  • Socket: 775
  • Supports the following processors:
    • Intel Core 2 Duo E6x00 with Dual Core technology (Conroe core)
    • Pentium D 9x0 series Dual Core (Presler)
    • Pentium D 8xx series (Smithfield)
    • Pentium 4 6x1 series (Cedar Mill core)
    • Pentium 4 6xx series (Prescott core)
    • Pentium 4 5xx series (Prescott core)
    • Pentium 4 LGA-775 HT (Prescott core)
Front side bus
  • 533 MHz, 800 MHz, 1066 MHz (processor dependent)
  • Intel G965
BIOS features
  • System BIOS core brand: Award
  • Keyboard combination to used to enter BIOS: F1
Form factor
  • Micro-ATX: 9.6 in X 9.6 in
  • Four 240-pin DDR2 DIMM sockets
  • Supports PC2 4200 (533 MHz), PC 5300 (667 MHz) and PC2 6400 (800 MHz) DDR2 DIMMs
  • Maximum HP/Compaq approved memory is 8 GB*

NOTE:*Actual available memory may be less
Expansion slots
  • Three PCI
  • One PCI Express x16 graphics
Video graphics
  • Integrated
Serial ATA
  • 6 SATA connectors
  • Each connector supports 1 serial ATA-150 disk drive
Onboard audio
  • Built-in High Definition 8 channel audio
  • Realtek ALC 885 CODEC
  • Dolby 5.1 audio support
Onboard LAN
  • Intel 82562V
  • 10/100 Mbps Fast Ethernet
Back panel I/0
  • One PS/2 keyboard port (purple)
  • One PS/2 mouse port (green)
  • One SPDIF in port
  • One SPDIF out port
  • One VGA out port
  • Four USB 2.0
  • One IEEE 1394a
  • One RJ-45 networking port
  • Audio ports:
    • Line-in (light blue)
    • Line-out (lime)
    • Microphone-in (pink)
    • Side speaker out (gray)
    • Rear speaker out (black)
    • Center/subwoofer (yellow orange)
Internal connectors
  • One 24-pin ATX power connector
  • Six SATA connectors
  • One floppy drive connector
  • One 12v fan connector
  • One 9-pin header for power button, reset button, power LED, and HDD LED
  • One CD-Audio In connector
  • One line input connector
  • One audio header for headphone-out and microphone-in
  • Six USB 2.0 headers supporting 6 USB ports or devices
  • One IEEE 1394a connector
NOTE:Motherboard specifications are subject to change without notice.

Motherboard layout and photos

1 - PS/2 mouse port (green). This port is for a PS/2 mouse.
2 - Coaxial SPDIF Out port. This port connects an external audio output device via a coaxial SPDIF cable.
3 - LAN (RJ-45) port. This port allows connection to a Local Area Network (LAN) through a network hub.
4 - Rear Speaker Out port (black). This port connects to the rear speakers on a 4-channel, 6-channel, or 8-channel audio configuration.
5 - Center/Subwoofer port (yellow orange). This port connects the center/subwoofer speakers.
6 - Line In port (light blue). This port connects a tape, CD, DVD player or other audio sources.
7 - Line Out port (lime). This port connects a headphone or a speaker. In 4-channel, 6-channel, and 8-channel mode, the function of this port becomes Front Speaker Out.
8 - Microphone port (pink). This port connects a microphone.
9 - Side Speaker Out port (gray). This port connects to the side speakers in an 8-channel audio configuration.
10 - USB 2.0 ports 1, 2, 3, and 4. These four 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices.
11 - IEEE 1394a port. This 6-pin IEEE 1394a port provides high-speed connectivity for audio/video devices, storage peripherals, PCs, or portable devices.
12 - Video Graphics Adapter port. This 15-pin port is for a VGA monitor or other VGA-compatible devices.
13 - Coaxial SPDIF In port. This port connects an external audio input device via a coaxial SPDIF cable.
14 - PS/2 keyboard port (purple). This port is for a PS/2 keyboard.

Clearing the BIOS settings

CAUTION: Do not change any jumper setting while the computer is on. Damage to the motherboard can result.
This motherboard has jumpers to:
Clear the Real Time Clock (RTC) RAM in CMOS. In the default (normal) position the jumper is on pins 2-3.
Figure 1: Jumper locations

Clearing CMOS

To clear CMOS, follow these steps:
  1. Temporarily set jumper CLEAR_CMOS to pins 1-2.
  2. Wait 5-10 seconds and then return the jumper to pins 2-3.
  3. On the next PC startup, enter BIOS setup to reset any custom BIOS settings.

Clearing the BIOS password

The BIOS password is used to protect BIOS settings from unwanted changes. If the BIOS password has been forgotten, disable password checking to enter setup and change or erase the password.
To erase the BIOS password follow these steps:
  1. Turn OFF the computer and unplug the power cord.
  2. Locate the jumper labeled CLEAR_PWD. In the default (normal) position the jumper is on pins 2-3.
  3. Move the jumper on jumper CLEAR_PWD to pins 1-2 to clear password.
  4. Plug the power cord and turn ON the computer.
  5. Hold down the F1 key during the startup process and enter BIOS setup to change or clear the password.
  6. After changing or clearing the BIOS passwords, remember to reset the jumper to pins 2-3.

Jumper J6

The motherboard may include an additional jumper J6. This jumper will have pins 1-2 bridged and should not be changed.

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