SIIG 5.1 - Manual (Page 3)

3
Audio Connectors
MIC
This connector provides microphone-in function.
LINE In
This connector provides analog line-in function.
Optical Digital Out (Toslink)
Optical Digital (S/PDIF) output via Toslink to Digital
5.1 surround sound speakers.
CD-In (internal)
This connector can be used to attach a CD-ROM or
DVD-ROM audio cable (cable not included).
Aux-In (internal)
This connector can be used to connect a second
CD-ROM or DVD-ROM or other audio output devices.
Audio cable not included.
S/PDIF Out (internal)
Digital output 2-pin connector for connecting to audio
input devices. Audio cable not included.
Front Out (red)
This connector provides front source output, or you can
connect one set of stereo speakers.
Rear Out (white)
This connector provides rear surround sound output.
Center/Subwoofer Out (yellow)
This connector provides center and subwoofer (LFE)
sound source output.
Headphone (green)
This connector can be used to connect stereo headphones.