HP Compaq motherboard
PS/2 mouse port (green). This port is for a PS/2 mouse.
SPDIF coaxial out port. This port connects to external audio output devices with coaxial cable connectors.
IEEE 1394 port. This 9-pin IEEE 1394 port provides high-speed connectivity for audio/video devices, storage peripherals, PCs, or portable devices.
LAN (RJ-45) port. This port allows connection to a Local Area Network (LAN) through a network hub.
Rear Speaker Out port (black). This port connects to the rear speakers on a 4-channel, 6-channel, or 8-channel audio configuration.
Center/Subwoofer port (yellow orange). This port connects the center/subwoofer speakers.
Line In port (light blue). This port connects a tape, CD, DVD player or other audio sources.
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.
Microphone port (pink). This port connects a microphone.
Side Speaker Out port (gray). This port connects to the side speakers in an 8-channel audio configuration.
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.