Thunderbolt documents are behind NDAs (as far as I know), but you can get a good feel for the types of testing required by checking out the USB-IF Compliance Te

Thunderbolt documents are behind NDAs (as far as I know), but you can get a good feel for the types of testing required by checking out the USB-IF Compliance Test Specifications: https://www.usb.org/documents https://www.usb.org/documents Thunderbolt is basically a superset of that.