NOT KNOWN FACTUAL STATEMENTS ABOUT HYDRABUS

An USB isolator aids eliminate ground loops and reduces electromagnetic interference (EMI) concerning the pc and also the related unit.1x GND 3V3 (P2 with two pins two.54mm) connector can be used to electric power externally the WCH CH569 MCU (it is suggested to eliminate the P4/SHUNT in that case It's not at all required as the 3V3 LDO IC1 is safe