Apple MMEL2AM/A Thunderbolt 3 to Thunderbolt 2 Adapter

The Apple MMEL2AM/A Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter serves a specific but important purpose: bridging the gap between Apple's current Thunderbolt 3 ports and the previous generation of Thunderbolt and Thunderbolt 2 devices. If you've upgraded to a MacBook Pro or other Mac with USB-C/Thunderbolt 3 ports but still rely on Thunderbolt 2 peripherals — external storage arrays, audio interfaces, video capture devices, or Thunderbolt-enabled displays — this adapter keeps that hardware in your workflow without replacement.

The adapter is bidirectional, which is a detail many overlook. Beyond the primary use case of plugging Thunderbolt 2 devices into a Thunderbolt 3 Mac, it also allows Thunderbolt 3 peripherals to connect to older Macs running macOS Sierra or later that have Thunderbolt or Thunderbolt 2 ports. It's important to understand the adapter's boundaries, however: it strictly handles the Thunderbolt protocol and will not work with DisplayPort-only monitors such as the Apple LED Cinema Display or third-party Mini DisplayPort screens. When used with the Apple Thunderbolt Display specifically, the display needs its own power source to operate through this adapter.