If the cable from your external device doesn't connect to the Thunderbolt 3 or USB-C port on your Mac or iPad Pro, you might need an adapter.
Thunderbolt 3
Mac models that have Thunderbolt 3 ports. These ports support both Thunderbolt 3 and USB-C connections.
USB-C
Mac models that have a USB-C port. This port supports USB-C connections.
iPad Pro models that have a USB-C port. This port supports USB-C connections.
