Our common USB port is type-a, which is also compatible with USB 1.0, 2.0 and 3.0.
The full function is USB3. 1, which supports charging data and video output. If the function is not complete, you can only output data, which is actually USB3.0.
However, the development of lightning was not smooth before. Seeing that it was hot on the type-c side, I leaned in and let the lightning mark the TYPE-C interface. Type C interface marked with lightning can be called Lightning 3 interface. Note that the Thunderbolt 3 interface must also support USB3. 1.