Compaq Presario Media Center SR1950NX Desktop PC support
Motherboard specifications table
| Part / Feature | Specification / Support |
|---|---|
| Motherboard description |
|
| CPU/Processor |
|
| Front-side bus (FSB) |
|
| Chipset |
|
| BIOS features |
|
| Form factor |
|
| Memory |
|
| Expansion slots |
|
| Video graphics |
|
| Onboard audio |
|
| Onboard LAN |
|
| Back panel I/O |
|
| Internal connectors |
|

NOTE:Motherboard specifications are subject to change without notice.
Motherboard layout and photos
Figure 3: Backplate

1 - PS/2 mouse port (green). This port is for a PS/2 mouse.
2 - SPDIF coaxial out port. This port connects to external audio
output devices with coaxial cable connectors.
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 through 4. These four 4-pin Universal Serial Bus (USB) ports are available for connecting USB 2.0 devices.
11 - IEEE 1394 port. This 9-pin IEEE 1394 port provides high-speed
connectivity for audio/video devices, storage peripherals, PCs, or portable devices.
12 - Video Graphics Adapter port. This port is for a VGA monitor or other VGA-compatible devices.
13 - 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.
- Disable password checking.
Clearing CMOS
To clear CMOS, follow these steps:
Clearing the BIOS password
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:
- Turn OFF the computer and unplug the power cord.
- Locate the jumper labeled Clear P.W. (CLR_PWD). The jumper is found at the lower right edge of the motherboard, near the SATA connectors.
- Move the jumper on jumper CLR_PWD to pins 1-2.

- Plug the power cord and turn ON the computer.
- Hold down the F1 key during the startup process and enter BIOS setup to change or clear the password.
- After changing or clearing the BIOS passwords, remember to reset the jumper to pins 2-3.

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