Compaq Presario SR1803WM Desktop PC support
Motherboard Specifications, P5RC-LA (Agena)
Motherboard specifications table
|Part / Feature||Specification / Support|
|Front-side bus (FSB)|
|Back panel I/O|
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 - Parallel port. This 25-pin port connects a parallel printer, a scanner, or other devices.
3 - IEEE 1394a port. This 6-pin IEEE 1394a port provides high-speed connectivity for audio/video devices, storage peripherals, PCs, or portable devices.
4 - LAN (RJ-45) port. This port allows connection to a Local Area Network (LAN) through a network hub.
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 - Side Speaker Out port (gray). This port connects to the side speakers in an 8-channel audio configuration.
11 - USB 2.0 ports 1, 2, 3, and 4. These four 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 - S-Video: common to many home video components. The video signal is split up into two channels, providing good image fidelity.
14 - Coaxial S/PDIF Out port. This port connects an external audio output device via a coaxial S/PDIF cable.
15 - 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.
Do not change any jumper settings while the PC is running. Damage to the motherboard may result.
This motherboard has jumpers to:
- Clear the Real Time Clock (RTC) RAM in CMOS.
- Disable password checking.
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: