Gigabyte GA-VM900M User Manual page 70

Setting Up 7.1-Channel Audio
STEP 1 :
After installation of the audio driver, you should find
a VIA HD Audio Deck icon in your system tray.
Double-click the icon to open the Audio Control
Panel.
STEP 2:
In the Audio Control Panel, click the Speaker tab.
In the left list, click the 8 Channel button.
The 7.1-channel audio setup is completed.
GA-VM900M Motherboard - 70 -