Gigabyte GA-6OXM7 User Manual page 60

6OXM7 Series Motherboard
e. Click "Digital" item, Line Out will be change to SPDIF Out.
f. Recommend you to select "Autosense", it will auto detect the audio jack you plug in to Line
Out is mono or stereo, and then change to SPDIF Out or Speaker out automatically.
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