Thunderbolt 3 was announced in 2015 and arrived to consumers in Apple's 2016 MacBook Pros. This allowed for a newer and more versatile cable spec to be added without changing or adding ports to ...
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.