SOYO SY-KT880 DRAGON 2 User Manual page 38

Hardware Installation
6. Onboard audio (Audio Speakers connections)
When using 2-channel speaker, connect the speaker cable to Line-out.
If you're using 2, 4, 6 or 8 channel speaker, make sure that the audio
software is set for 2, 4, 6 or 8 channel speaker system.
CENTER/Bass
Back Surround
Note: When using SPDIF, please make sure to set the audio software
for SPDIF, and CENTER/Bass (orange color) will be the optical Line
out. Lin in (blue color) will be the optical Line-in.
Surround
SY-KT880 DRAGON 2
Line in
Line out / Front out
MIC IN
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