> And A is always the same socket regardless of version Even this is technically incorrect: USB-3 A-type sockets, though backwards compatible for f/m and m/f

> And A is always the same socket regardless of version Even this is technically incorrect: USB-3 A-type sockets, though backwards compatible for f/m and m/f connecting with USB-2, have 5 more contacts compared to USB-2 type A sockets.