USB 2.0 we have 4 channels (mics) set up. We finally got it to work but it crashes continually when setting up the GB track names and setting the attributes of each track.
Also, none of the LED lights work on the mixer itself, but I'm assuming that's because you're supposed to use GB to monitor the levels during recording.
Seems like an expensive machine just to be able to import the audio to GB and not much else.