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HP and Compaq Desktop PCs - Motherboard Specifications, MOCA-AR (Calcite)
Figure 1: The MOCA-AR (Calcite) motherboard
Front-side bus speed
Processor upgrade information
Socket type: 479M
Motherboard supports the following processor upgrades:
Memory upgrade information
*Integrated video is not available if a graphics card is installed.
Integrated Realtek ALC883S Audio
*Integrated audio is not available if a sound card is installed
Back I/O ports
Figure 2: Back I/O panel
1 - PS/2 mouse (green)
2 - Composite Video out
3 - IEEE 1394a
4 - RJ-45 Network (LAN)
5 - Audio: Rear Speaker Out
6 - Audio: Center/Subwoofer (yellow orange)
7 - Audio: Line In (light blue)
8 - Audio: Line Out (lime)
9 - Audio: Microphone (pink)
10 - Audio: Side Speaker Out (gray)
11 - USB 2.0: 4
12 - Video Graphics Adapter
13 - Coaxial SPDIF Out .
14 - S-Video
15 - PS/2 keyboard (purple)
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:
Reset the BIOS settings in CMOS RAM to their default values.
To clear CMOS, follow these steps:
Clearing the BIOS password
This motherboard has a jumper to disable password checking.
To disable BIOS password checking:
Additional Jumper J6
The motherboard may include an additional jumper J6. This jumper will have pins 1-2 bridged and should not be changed.