An USB isolator can help get rid of floor loops and lessens electromagnetic interference (EMI) in between the pc and the linked machine. 1x GND 3V3 (P2 with 2 pins two.54mm) connector can be used to electricity externally the WCH CH569 MCU (it is usually recommended to remove the P4/SHUNT https://silash849qhz5.levitra-wiki.com/user