Well, it's partially Apple's fault according to an anonymous USB engineer who gave a remarkably entertaining talk on the ...

Currently, the most commonly used USB standards are USB 3.1, USB 3.2, and USB 4.0. Physically, USB connectors now come in three versions: USB-A, USB-B, and USB-C. But what’s the difference between all ...

USB-C ports can be configured with 5V 1.5A and 3A ... The more modern USB Power Delivery 2.0 and 3.0 variations drop fixed profiles in favor of more flexible power rules. These rules keep fixed ...