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Motherboard Specifications, PTGV-DM (Onyx2)

Motherboard specifications table
Part / Feature
Specification / Support
Motherboard description
  • Motherboard manufacturer's name: ASUS PTGV-DM
  • HP/Compaq name: Onyx2-GL8E
  • Socket: 479
  • Supports the following processors:
    • Pentium M (Mobile)
    • Celeron M (Mobile)
Front-side bus (FSB)
  • 400/533 MHz
  • Northbridge: i915GV
  • Southbridge: ICH6
BIOS features
  • HP BIOS with enhanced ACPI, DMI, Green, and PnP Features Plus
Form factor
  • ATX form factor, 6.69 in x 6.69 in
  • 2 x 240-pin DDR2 DIMM socket for up to 2 GB non-ECC DDR2 533/400 SDRAM
  • Maximum HP/Compaq approved memory is 2 GB
Expansion slots
  • One PCI
Video graphics
  • Integrated
Serial ATA
  • 2 SATA connectors
  • Each connector supports 1 serial ATA-150 disk drive
Onboard audio or audio card
Realtek ALC880 8-channel High Definition Audio CODEC
Onboard LAN
  • Intel 82562GT
  • 10/100 Mbps
Back panel I/O
  • PS/2 keyboard port (purple)
  • PS/2 mouse port (green)
  • One VGA (monitor) port
  • Four USB (2.0) ports
  • One IEEE 1394a port
  • One RJ-45 networking port
  • One SPDIF out port
  • Audio ports:
    • line in (light blue)
    • line out (lime)
    • microphone (pink)
    • side speaker out (gray)
    • rear speaker out (black)
    • center/subwoofer (yellow orange)
Internal connectors
  • One 24-pin ATX "Micro-Fit" power connector
  • One IDE connector
  • Two SATA connectors
  • One CPU fan connector
  • One PC fan connector
  • One PC indicator LEDs / power switch / reset button connector
  • Front panel power and LED connectors
  • Two USB 2.0 connectors ports
Motherboard specifications are subject to change without notice.
Motherboard layout and photos
Figure : layout
Figure : Photograph
    Figure : Backplate
  1. PS/2 mouse port (green). This port is for a PS/2 mouse.
  2. IEEE 1394a port. This 6-pin IEEE 1394a port provides high-speed connectivity for audio/video devices, storage peripherals, PCs, or portable devices.
  3. LAN (RJ-45) port. This port allows connection to a Local Area Network (LAN) through a network hub.
  4. Side Speaker Out port (gray). This port connects to the side speakers in an 8-channel audio configuration.
  5. Rear Speaker Out port (black). This port connects to the rear speakers on a 4-channel, 6-channel, or 8-channel audio configuration.
  6. Center/Subwoofer port (yellow orange). This port connects the center/subwoofer speakers.
  7. Line In port (light blue). This port connects a tape, CD, DVD player or other audio sources.
  8. 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.
  9. Microphone port (pink). This port connects a microphone.
  10. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices.
  11. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices.
  12. Video Graphics Adapter port. This 15-pin port is for a VGA monitor or other VGA-compatible devices.
  13. Coaxial SPDIF Out port. This port connects an external audio output device via a coaxial SPDIF cable.
  14. PS/2 keyboard port (purple). This port is for a PS/2 keyboard.
Clearing BIOS settings
Resetting BIOS settings are done by moving a jumper onto a pair of pins on the motherboard. Use this section to clear settings for the CMOS RAM (sometimes referred to as Real Time Clock or RTC) or the BIOS password.
Do not change any jumper setting while the computer is on. Damage to the motherboard can result.
This motherboard has jumpers to:
  1. Clear the Real Time Clock (RTC) RAM in CMOS.
  2. Disable password checking.
Figure : Jumper locations
Clearing CMOS
To clear CMOS, follow these steps:
  1. Set jumper CLRTC1 to pins 1-2.
    Do NOT start the system with this jumper set to pins 1-2.
  2. Wait 10 seconds and then return the jumper to pins 2-3.
  3. You may now restart the PC.
Clearing BIOS password
This motherboard has a jumper to disable password checking.
To clear the BIOS password follow these steps:
  1. To disable BIOS password checking, move the jumper CLPWD1 to pins 1 and 2.
  2. You may now start the computer, enter BIOS setup, and change or erase the password.
  3. To enable BIOS password checking, replace the jumper on pins 2-3.


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