The Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter lets you connect Thunderbolt and Thunderbolt 2 devices — such as external hard drives and Thunderbolt docks — to any of the Thunderbolt / USB 4 or Thunderbolt 3 (USB-C) ports on your Mac. As a bidirectional adapter, it can also connect Thunderbolt 3 devices to a Mac with a Thunderbolt or Thunderbolt 2 port and macOS Sierra or later. In addition, it can be used to connect Thunderbolt-enabled displays — such as the Apple Thunderbolt Display and LG Thunderbolt 2 displays — to any of the Thunderbolt / USB 4 or Thunderbolt 3 (USB-C) ports on your Mac. However, please note that the adapter requires a power source to work with an Apple Thunderbolt Display. Power is not provided by the adapter. Note: This adapter does not support DisplayPort displays such as the Apple LED Cinema Display or third-party DisplayPort and Mini DisplayPort displays. Compatibility with MacBook Air models: MacBook Air (M2, 2024), MacBook Air (M1, 2020), MacBook Air (Retina, 13-inch, 2020), MacBook Air (Retina, 13-inch, 2018 - 2019) Compatibility with MacBook Pro models: MacBook Pro (13-inch, M2, 2024), MacBook Pro (13-inch, M1, 2020), MacBook Pro (13-inch, 2020, Four Thunderbolt 3 ports), MacBook Pro (13-inch, 2020), MacBook Pro (14-inch, 2021), MacBook Pro (16-inch, 2021), MacBook Pro (16-inch, 2019), MacBook Pro (13-inch, 2016 - 2019), MacBook Pro (15-inch, 2016 - 2019)