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HP OmniBook 500 Notebook PC series support

Motherboard Specifications, A8SN-CF (Phoenix)

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Figure 1: The A8SN-CF (Phoenix) motherboard
  • Manufacturer's motherboard name: Asus A8SN-CF
  • HP/Compaq name: Phoenix
  • Custom: 24.4 cm (9.6 inches) x 21.8 cm (8.6 inches)
  • NVIDIA GeForce 6100
  • 1600MT/s (1.6 GT/s)
Socket type: S1
Motherboard supports the following processor upgrades:
  • AMD Turion 64 X2 TL series - TL-64 (2.2 GHz) Max
  • Dual channel memory architecture
  • Two DDR2 SO-DIMM (200-pin) sockets
  • Supported memory:
    • PC2-4200 DDR2 DIMMs
    • PC2-5300 DDR2 DIMMs
  • Maximum HP/Compaq approved memory is 4 GB (2 x 2 GB)
  • PCIe x16 interface
  • MXM connector
  • 256 MB
*Integrated audio is not available if a sound card is installed.
  • High Definition 5.1 channel audio
  • SPDIF support
  • Audio Codec: ADI AD1988B
  • Interface: Integrated into motherboard
  • Technology: Marvell 88EC030
  • Data transfer speeds: up to 10/100/1000 Mb/s (Gigabit Ethernet) LAN NOTE: Gigabit Ethernet is backwards compatible with 10/100 Mb/s network hardware.
  • Transmission standards: 1000-Base-T Ethernet
  • One hybrid PCIe x1 / PCI slot on underside of motherboard
Figure 2: Back I/O panel
1 - IR transmitter for set top box
2 - Audio jacks: subwoofer/center (orange), rear speakers (black), front speakers (white)
3 - SPDIF (digital audio out)
4 - 6-pin 1394a
5 - HP printer Y-cable (USB and power)
6 - USB 2.0 (4, including Y-cable)
7 - RJ-45 Network (LAN)
  • LCD control module in LCD display
  • USB Bluetooth module
  • Mini D-SUB on rear of PC
  • Hard Disk Drive
  • Audio signals to LCD display
  • Front headphone jack
  • CPU FAN
  • Power button in the front panel
  • LEDs in the front panel
  • Connect to PSU to support power for printer
  • 24-pin ATX power connector
  • Jumpers for BIOS reset / Password enable-disable
  • Connect to IR remote receiver module for IR blaster jack support
  • Card reader module
  • Miniature DC fan in V-Shape panel
  • Pocket Media Drive Dock
  • IR remote receiver module
  • Wireless keyboard/mouse transceiver module
  • Front I/O panel (2 x USB, 1394)
  • Discrete Graphics Module
  • LCD Panel (from graphics card)
  • Speaker power cable to LCD display
  • ODD transport button module in the front panel
  • Mini IDE for optical disk drive
Figure 3: layout
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.
To clear CMOS, follow these steps:
  1. Temporarily set jumper CLRRTC1 to pins 1-2.
  2. Wait 5-10 seconds and then return the jumper to pins 2-3.
    When you startup the PC you will need to enter BIOS setup to reset any custom BIOS settings.
The BIOS password is used to protect BIOS settings from unwanted changes. If you have forgotten your password you may disable password checking.
To erase the BIOS password follow these steps:
  1. Turn OFF the computer and unplug the power cord.
  2. Locate the jumper labeled Clear P.W. The jumper is found at the lower right edge of the motherboard.
  3. Move the jumper to pins 1-2.
  4. Plug the power cord and turn ON the computer.
  5. Hold down the F10 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.
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