Original Oplab Schematics?

Hi all, last year I managed to use a wrong adaptor for my oplab.
Since then, logically, I think I fried something.
Everything is still working (UX, CV to midi, midi to CV, etc.) EXCEPT for the 2 usb ports.
Which leads me to think I’ve damaged some usb dedicated chip. Does anyone have any experience with the schematic of the oplab or fixing things wrong with them? Thanks!