Can you tell me if the USB on the 40 pin header that connects the tone board to the Vim is used by the tone board?
According to the schematic, the Tone Board is using the VIMs’ GPIO USB header, pins 1-5.
Pins 1&2 for 5vdc to D1
Pins 3&4 for USB_DM and USB_DP respectively to U12
Pin 5 for Ground.