GeeekPi USB Digital Isolator with ADuM3165 Chip, 4-Port USB 2.0, High-Speed 480Mbps, Industrial-Grade ADuM3165 Chip, 3.75kV RMS Protection, Bidirectional Data Transfer

The following products use Analog Devices USB isolator chips. Shoppers need to be careful, because the cheap isolators only support up to USB 2.0 FS (12Mbps) because they use the ADuM3160 chip, where as the more expensive isolators support up to USB 2.0 HS (480Mbps) because they use the ADuM3165 chip. USB 2.0 FS (12Mbps) Isolator: https://www.amazon.com/dp/B093LKN3YH/ This has an internal isolated DC-to-DC power supply to power the isolated target side. USB 2.0 HS (480Mbps) Isolator: https://www.amazon.com/dp/B0CBJYGBL3/ This has an internal isolated DC-to-DC power supply to power the isolated target side. USB 2.0 HS (480Mbps) Isolated 4-Port Hub: https://www.amazon.com/dp/B0FY6KMTB3/ The host is isolated from the hub. The 4-ports aren't isolated from each other. This is a powered hub that requires a "wall wart" to power the 4-port hub side of the isolator. Here is the internal PCB that some customer posted in a review. https://m.media-amazon.com/images/I/71SknSBWdsL.jpg U1 = isolator IC, U2 = hub IC, U3 = voltage regulator IC.