An USB isolator assists remove ground loops and lessens electromagnetic interference (EMI) involving the computer along with the related unit. 1x GND 3V3 (P2 with two 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://hydrabus39517.bloggadores.com/32402806/details-fiction-and-hydrabus