In contrast, the USB 3.0 Type-B connector features a square design with a noticeable protrusion at the top. The larger shape accommodates nine pins, compared to four in other USB Type-B ports.

and follow-on micro-USB (January 2007) standards responded to this demand. In both cases, GND moved from pin 4 (on standard Type-A and Type-B) to pin 5, with pin 4 now used to support optional ...

The Type-C connector, which has 18 pins, is essentially two USB 3.1 SuperSpeed connectors (which have the standard four pins, plus five more to enable 10Gbps connections). If you plug the ...

USB 3.0 Powered-B plug and connector. This design has two additional pins to provide extra power to the peripheral device. Also, there's a relatively rare Micro Type-AB port that allows the device ...

A peek at the pin map of a USB Type-C connector reveals there are no less than two dozen connection points in a space just over 8mm wide. With a reversible plug orientation and cable direction, USB ...

user behavior in terms of PIN choice has probably not changed much. The hardware is not much more than a Digispark board, a small ATtiny85-based board with built-in USB connector, and an adapter.