USB used to be easy to follow, but has become confusing since the advent of USB 4, USB C, and Thunderbolt.

System Information on my MBP says "Thunderbolt/USB 4" in its sidebar, but doesn't say anywhere that it'sThunderbolt 3. (Mactracker tells me that.)

And add to that the facts that
  • A Thunderbolt port is the same as a USB C/4 port,
  • Mactracker tells me that my Thunderbolt ports support USB 3.1 Gen 2, but as far as I can tell, USB 3.1 Gen 2 is really USB 3.2 Gen 1,
  • and a USB drive plugged into a Thunderbolt port with an adaptor shows in System Information as utilizing a USB Bus but not a Thunderbolt Bus.


Truly confusing!


The new Great Equalizer is the SEND button.

In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire