Gigabyte GA-7ZMMH User Manual page 49

7ZMMH Motherboard
e. Click "Digital" item, Line Out will be reconfigure to SPDIF Out.
f. Recommend you to select "Autosense", It will automatically detect the type (mono or
stereo) of the audio connector that you plug into Line Out audio jack, then configure Line
Out to either SPDIF or Speaker accordingly.
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