Apple Apple Genuine, Authentic USB-C to Thunderbolt 2 Adapter MMEL2AM/A A1790 Excellent Condition Apple genuine, authentic product. Engraved markings present. Includes: Adapter, Warranty sheet, Certificate/Instructions, Inner cardboard, Outer box. Used only a few times, with almost no scratches or minor imperfections; excellent condition. Genuine, authentic product. The certificate/instructions have some folds. The outer box has a dent. Functionality confirmed. Immediate purchase OK. This adapter allows you to connect Thunderbolt or Thunderbolt 2 devices, such as external hard drives and Thunderbolt docks, to all Thunderbolt 3 (USB-C) and USB 4 ports on your Mac. It's a bidirectional adapter, so you can also connect new Thunderbolt 3 devices to a Mac with a Thunderbolt or Thunderbolt 2 port and macOS Sierra or later.