ESI GIGAPort DG - Manual (Page 7)

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5. Driver Installation
1) PC
- WDM Installation
1. After hardware installation was done properly, your computer will automatically
detect GIGAPort DG as USB composite device will be installed.
2. After rebooting computer, you can find “USB Audio Device” under the “Sound,
Video and game controller” section.
As above picture, GIGAPort DG is set as a “USB AUDIO Device”.
Now you can use Windows Direct sound, MME and 5.1 surround system.