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And A is always the same socket regardless of version while B is not. It's a mess.

> 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.

Returning to this topic, maybe...

USB-C-3 for the new connector format.

USB-C-2 for some (many) cellphones.

USB-Micro-2 (for many phones).

USB-Mini-2 (older phones)

- Edit -

I changed my mind, the connector is more important than the wire version.

> Alas the standard needs standardised....

https://www.xkcd.com/927/