[mindslight]

I think the ADI ones are actually based on transformers.

Specifically they'll do "Full Speed" 12Mbit, but not "High Speed" 480Mbit. USB3 @ 5Gbit can also be isolated, as it uses separate send/receive pairs. But that doesn't mean you can use a hub and drop down to 480MBit - they're separate data paths.

If you need 480Mbit, the best solution is probably a Raspberry Pi or other SBC, to convert to ethernet.