@Lili: I’ve been having a problem with the USB port on the Rock960C. I actually have 2 of the boards, purchased separately, months apart, so it isn’t a case of the board being broken.
On BOTH boards, I have been unable to get the center USB port to work at all (the one designated for dual-mode), even just plugging in a keyboard doesn’t work. I’ve tried with the switch in both positions. Can you shed any light on this?