An USB isolator will help eliminate ground loops and cuts down electromagnetic interference (EMI) among the computer as well as the related unit. 1x GND 3V3 (P2 with two pins two.54mm) connector can be utilized to electricity externally the WCH CH569 MCU (it is suggested to eliminate the P4/SHUNT in https://subhashl061yup3.blog-a-story.com/profile