MSI K8T Neo-FSR User Manual page 90

4-Channel Mode for 4-Speaker Output
Refer to the following diagram and caption for the function of each phone
jack on the back panel when 4-Channel Mode is selected.
7
1 Line In
2 Line Out (Front channels)
3 MIC
4 Line Out (Rear channels)
5 Line Out (Center and Subwoofer channel, but no functioning in this mode)
6 SPDIF Out Optical jack
7 SPDIF Out Coaxial jack
Using 4- or 6-Channel Audio Function
Back Panel
1
2
3
4
5
6
A-13