Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter
Thunderbolt 3 (USB-C) The Thunderbolt 2 adapter allows you to connect Thunderbolt 2 and Thunderbolt 2-equipped devices such as external hard drives and Thunderbolt-capable monitors to any Thunderbolt 3 (USB-C) connection on your MacBook Pro port*. The bi-directional adapter also connects the new Thunderbolt 3 unit to a Mac * with a Thunderbolt or Thunderbolt 2 port.* Requires macOS Sierra.
** Availability and Quantity Restrictions may vary.