Keep in mind that the HydraBus is undoubtedly an immensely capable Resource, and combining it with an USB isolator boosts basic safety, reliability, and precision in numerous eventualities. 1x GND 3V3 (P2 with two pins 2.54mm) connector may be used to power externally the WCH CH569 MCU (it is suggested https://eu-pentestlab.co/en/