On my two PCs, one with the other with 8.1 Win Win 7, the burner is not detected at the USB 3.0 ports.
On USB 2.0 it will be recognized by both PC's.
Since the unit was only delivered, I could not try it. I need the burner mainly for burning Blurays. Otherwise, it's pretty small and looks well made of high quality.
Since the device is offered with USB 3.0 but, I'm still thinking whether I will not return back to Amazon.