Gigabyte GA-8ST667 User Manual page 76

Advanced 6 Channel Analog Audio Output Mode (using SURROUND-KIT):
(Audio Combo Kit provides SPDIF output port : optical & coaxis and SURROUND-KIT : Rear R/L &
CEN /Subwoofer)
SURROUND-KIT access analog output to rear
channels and Center/Subwoofer channels. It is the
best solution if you need 6 channel output, Line In
and MIC at the same time. "SURROUND-KIT" is
included in the GIGABYTE unique "Audio Combo
Kit" as picture.
STEP 1 :
Insert the "Audio Combo Kit" in the back of the case,
and fix it with the screw.
STEP 2 :
Connect the "SURROUND-KIT" to SUR_CEN on
the M/B.
GA-8ST667 Series Motherboard - 72 -