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HP and Compaq Desktop PCs - Motherboard Specifications, 945GCT-HM (Livermore8)

Figure 1: The 945GCT-HM (Livermore8) motherboard

Motherboard description

  • Manufacturer's motherboard name: ECS 945GCT-HM

  • HP/Compaq name: Livermore8-GL6

Form Factor

  • Micro-ATX: 24.4 cm (9.6 inches) x 24.4 cm (9.6 inches)


  • Intel 945GC

Front-side bus speed

  • 800/533 MHz (processor dependent)

Processor upgrade information

Socket type: 775

Motherboard supports the following processor upgrades:

  • Core 2 Duo (Conroe) up to E4300

  • Pentium D (Presler) up to 960 (3.6 GHz)

  • Pentium 4 (Cedar Mill) up to 661 (3.6 GHz)

  • Celeron D (Cedar Mill) up to 365 (3.6 GHz)

  • Celeron D (Prescott) up to 355 (3.33GHz)

Memory upgrade information

  • Dual channel memory architecture

  • Two 240-pin DDR2 DIMM sockets

  • Supported DIMM types:

    • PC2-3200 (400 MHz)

    • PC2-4200 (533 MHz)

    • PC2-5300 (667 MHz, runs at 533 MHz)

  • Non-ECC memory only, unbuffered

  • Supports 1 GB DDR2 DIMMs

  • Supports up to 2 GB


Integrated graphics using Intel GMA 950

*Integrated video is not available if a graphics card is installed.

  • Integrated graphics using Intel GMA 950

  • Use up to 256MB of PC memory (with 512MB or more total PC memory)

  • Also supports PCI Express x16 graphics cards


Integrated Realtek ALC888 Audio

*Integrated audio is not available if a sound card is installed.

  • Audio CODEC: ALC888

  • 6-channel high-definition audio


LAN: 10-Base-T

  • Interface: Integrated into motherboard

  • Technology: Realtek RTL8201E

  • Data transfer speeds: up to 10/100Mb/s

  • Transmission standards:10-Base-T Ethernet

Expansion Slots

  • One PCI Express x16

  • One PCI Express x1

  • Two PCI

I/O Ports

Back I/O ports

Figure 2: Back I/O panel

1 - PS/2 mouse (green)
2 - RJ-45 Network (LAN)
3 - Audio: Line In (light blue)
4 - Audio: Line Out (lime)
5 - Audio: Microphone (pink)
6 - USB 2.0: 4
7 - Video Graphics Adapter
8 - PS/2 keyboard (purple)

Internal Connectors

  • One 24-pin ATX power connector

  • One 4-pin ATX power connector

  • One PATA connector

  • Two SATA connectors

  • One floppy drive connector

  • Two 12v fan connectors for CPU fan and PC fan

  • One 9-pin header for power button, reset button, power LED, and HDD LED

  • One line input connector (white, Vista capable, requires matching front audio jack module)

  • One 9-pin audio header for headphone-out and microphone-in (yellow, Vista capable, requires matching front audio jack module)

  • Two USB headers supporting 4 USB 2.0 ports or devices

  • One Intel high-definition Audio/Modem Link (Not used by HP)

  • One jumper for resetting BIOS settings

  • One jumper to disable BIOS password checking

Motherboard layout

Figure 3: layout

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.

Clearing CMOS

To clear CMOS, follow these steps:

  1. Temporarily set jumper CLR_CMOS_HP to pins 2-3.

  2. Wait 5-10 seconds and then return the jumper to pins 1-2.

  3. When you startup the PC you will need to enter BIOS setup to reset any custom BIOS settings.

Clearing the BIOS password 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 CLR_PWD.

  3. Move the jumper on jumper CLR_PWD to pins 2-3.

  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 1-2.

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