HP Pavilion Media Center a1540n Desktop PC support
Motherboard Specifications, A8M2N-LA (NodusM)
Motherboard specifications table
|Part / Feature||Specification / Support|
|Front-side bus (FSB)|
NOTE:*Actual available memory may be less
|Back panel I/0||Listed in physical order from left to right:|
NOTE:Motherboard specifications are subject to change without notice.
Motherboard layout and photos
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 - IEEE 1394 port. This 9-pin IEEE 1394 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 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.
In the default (normal) position the jumper is on pins 2-3.
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. The jumper is found at the lower right edge of the motherboard, near the SATA connectors.
- Move the jumper on jumper Clear P.W. 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.