> Why does USB have two seemingly unrelated versioning schemes? There's USB 1, 2, 3 and now 4 as well as Type A, B and C. They decoupled the standards for the

> Why does USB have two seemingly unrelated versioning schemes? There's USB 1, 2, 3 and now 4 as well as Type A, B and C. They decoupled the standards for the protocol and the connector. "USB C" is just a port/connector shape -- there's no guarantee that any cable or port that is USB C shaped supports any version of USB-the-protocol. This is the case with eg) dedicated Thunderbolt 3 ports and cables. It's every bit as silly and confusing as it sounds in practice.