Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by lmm on Wednesday May 11, 2022 @07:54AM
(#31338561)
> Plug one end into a charger with a USB-A port (very common among phone chargers) and the other end into a charger with a USB-C port (Apple's chargers seem to be like this?).
It's forbidden to make a charger like that unless it has a chip that actually speaks the protocol and does power negotiation properly. Same for anything that has a female USB-C port.
Re:Why do USB-C hubs still have USB 2.0 ports? (2021)
by jmgao on Wednesday May 11, 2022 @02:06PM
(#31343655)
The trick is that USB-C has a pair of pins that identify what type of cable is connected. Different value resistors on the pins identify different types of cables, so the USB-C charger will know that the cable plugged into it is a legacy A to C cable, and not actually connect its VBUS.
Plug one end into a charger with a USB-A port (very common among phone chargers) and the other end into a charger with a USB-C port (Apple's chargers seem to be like this?).