So I purchased another one of these, and my first Magic-NS might be an earlier model, because only the 2nd one I purchased came with a USB C cable. Only the box of the 2nd one I purchased says that it comes with one. My first Magic-NS would only function if I turn on the Switch while the Magic-NS is unplugged, but the 2nd one doesn't have this issue. Did you install the updated firmware onto your Magic-NS from Mayflash's website? Is your controller paired/connected to the Magic-NS? What games did it work with, if any?