Sound card, 4 channels(outputs for 4 speakers), PCI

Supports all the major audio standards, including surround sound formats = DirectSound 3D, EAX, A3D

This is a pretty basic model, and so doesn't have a digital output, or 5th,6th speaker outputs(centre, subwoofer)

Inputs / Outputs:
'Speaker 1' (left, right front)
'Speaker 2' (left, right rear)
Line In
Mic In
Joystick / Midi socket

Also has 2 internal connectors which I assume are for connecting from CD/DVD drive.

PCI is the most common slot type used in computers(even quite old computers)

Compatibility:
Windows 95, 98, 98SE, ME, NT, 2000, XP
Linux ( http://www.cmedia.com.tw/download/OS_e-cmi8738_index.htm )
BEOS ( http://www.cmedia.com.tw/download/OS_e-cmi8738_index.htm )
DOS