Apple’s older 12in MacBook features one 5Gbps Gen 1 USB-C port, while the later Intel MacBook Air (2018 and later) and MacBook Pro (from 2016) boast either two or four 40Gbps Thunderbolt 3 ports.
The USB Type-C connector isn't just used for the USB standard. Intel's Thunderbolt has used the same connector since Thunderbolt 3. Thunderbolt does everything USB Type-C can do and more. Comparing ...