C920 PCBA wiring (older C920 revision)
Route USB wires as indicated in this diagram. I found Kynar monolithic wires are the best – small and easy to solder. 5 wires will be used USB D+, D-, GND, Power. Shield also has to be soldered.
USB connector is available on the other side of PCB and it is surface mount type. Therefore it will be easier to use test pins. While GND is not available as test pin I recommend making pad by yourself. You can also use other places to solder GND wire, it is just my recommendation. Scrape green soldering mask with scalpel to access GND.