MSI MS-7255 User Manual page 79

M S-7255 M ainboard
If the "Independent Headphone" feature has been enabled, the maximum number of
channels will be six. To control the headphone volume, click on the headphone icon
at the bottom-right corner.
Click here to view Independent Headphone Control
To switch back to the speaker volume controls, click on the speaker icon at the
bottom-right corner.
Headphone Volume
Click here, it will turn to Speaker Control.
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