Adapters for the Thunderbolt 4, Thunderbolt 3, or USB-C port on your Mac Learn about different adapters for the Thunderbolt 4, Thunderbolt 3, or USB-C port on your Mac. The adapters and cables in this article work with Mac computers with Thunderbolt 4 ports, Thunderbolt 3 ports, or a USB-C port. If your Mac only has one port, it doesn't support Thunderbolt connections. If you're using a USB-C or T