An USB isolator helps remove floor loops and minimizes electromagnetic interference (EMI) involving the computer along with the related gadget. 1x GND 3V3 (P2 with 2 pins two.54mm) connector can be employed to energy externally the WCH CH569 MCU (it is suggested to eliminate the P4/SHUNT in that situation It's https://johnl285mea6.digitollblog.com/profile