With the Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter, you can connect Thunderbolt and Thunderbolt 2 devices (like external hard drives and Thunderbolt docks) to any Thunderbolt/USB 4 or Thunderbolt 3 (USB-C) port on your Mac. Since it's a bidirectional adapter, you can also connect Thunderbolt 3 devices to a Mac with a Thunderbolt or Thunderbolt 2 port and macOS Sierra (or later). Additionally, you can use it to connect Thunderbolt-compatible displays (like the Apple Thunderbolt Display and LG Thunderbolt 2 displays) to any Thunderbolt/USB 4 or Thunderbolt 3 (USB-C) port on your Mac. Please note that you'll need a power source when using this adapter with an Apple Thunderbolt Display, as the display does not transfer power through the adapter. Note: This adapter does not support DisplayPort displays like 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)