Vantec UGT-S110 User Manual page 5

The rear panel of this 7.1 Channel PCIe Sound Card has the following
jacks:
1. Line In (blue): Connect to tape/CD/DVD player, or other audio
sources for output mixing and/or recording
2. MIC In (pink): Connect to microphone
3. Line Out (green): Connect to headphone or amplifying speakers.
In 4-channel, 6-channel, and 8-channnel configurations, the
function of this port becomes Front Speaker Out
4. Rear-Speaker/Surround-Speaker (black): Connect to Rear
speakers while 4/6/8 channel speaker mode is enabled (via
external amplifier)
UGT‐S110 Page 5