USB Isolator 3000 Vrms Rugged Metal Chassis - Coolgear
Hifimediy USB Isolators - Made for audio to prevent ground loops
Amazon.com: GeeekPi USB Isolator Module ADUM3160 USB Digital Isolation USB to USB Voltage Isolator Board Protection (5KV ESD MAX) with OC Protection : Electronics
Galvanic Isolator for USB 2 - can be used with the Ana Pot - zimmerandpeacock
USB to CAN Bus Adapter with Galvanic Isolation in Metal Case - Coolgear