I tried this on a small DVR/Server which is basically a single rack PC running Windows 7 supported by the OS listed. This server doesn't have built in audio so I figured that would add it. Unfortunately it didn't work. The limited documentation states that this works without external drivers; My box said "driver not found" and since there was no way to load the driver I couldn't get it to work. Your mileage may be different, but in my specific case it just wasn't recognized and didn't work. I've tried all USB ports, updated Windows and turned off the server to no avail.
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