Pretty much every USB audio interface is using USB2.0
The theory says you would only need USB3 if you have lots of simultaneous inputs.
Focusrite did a write up on this awhile back for those interested
https://support.focusrite.com/hc/en-...0-not-USB-3-0-
Though I believe Thunderbolt is a different story because of how it accesses the CPU.
I've done a full video about the EVO 16 that covers everything here:
https://youtu.be/9UD-Wq2Ly4A
It's a really nice interface, especially for the price.