Three minutes later -Īnd without any nag screens or other bullshit I downloaded one of the documents.ĭifferent specs for different uses of the cable, CC pins that detect configurations. I do not know how easy it is to obtain “official guidelines” for USB-C, but I’m sure there is plenty of well meant advice and guidelines floating around. No rocket science, if there is anything astounding then it is that it took 40 years to figure this out. Signal data transfer pairs also just swap location with another pair. I’m no expert in USB-C but I do know that the pinout is made explicitly in such a way that PWR and GND are still in the same relative locations when the plug is rotated.

For example when a connector or plug is damaged, but one of the other power pins can take over so it still “works”. They improve the current handling capability, reduce contact bounce and improve reliability.

It’s quite common and normal practice to have several GND pins (and Vcc pins) connected in parallel.

Download free usb c pinout