Gigabyte GA-8S648FXM User Manual page 74

SPDIF Output Device (Optional Device)
A "S/PDIF output" device is available on the
motherboard. Cable with rear bracket is provided
and could link to the "S/PDIF output" connector (As
picture.) For the further linkage to decoder, rear
bracket provides coaxial cable and Fiber connect-
ing port.
1. Connect the SPDIF output device to the rear
bracket of PC, and fix it with screw.
2. Connect SPDIF wire to the motherboard.
3. Connect co-axial or optical output to the AC3
decoder.
GA-8S648FXM Motherboard - 70 -