USB-C / Thunderbolt 3 ports (USB data)

ports.usb-cHands-on · automaticHigh confidence

How it tests

Same engine and the same reads as USB-A, counting only devices on the Thunderbolt 3 controller's USB buses. Alpine Ridge may power up only when something is plugged in.

How it decides

As USB-A.

How sure it is

Same strengths; the port kind comes from the controller, not the connector. Not yet run on a USB-C Mac.

What could mislead it

Could pass when it shouldn'tAs USB-A: enumeration alone counts, and a slow link is only a finding.
Could end without a verdictThe controller powers up late and the tester gives up first.