Compatible With (Incomplete List): Apple MacBook Air (BEFORE 2018)/Pro (BEFORE 2016), iMac (BEFORE 2017), Mac Mini, Mac Pro Microsoft Surface Pro/Pro 2/Pro 3/Pro 4/Pro 5/Pro6, Surface Laptop/Laptop 2 (NOT Surface 2), Surface 3 (NOT Surface), Surface Dock, Surface Book, Surface Studio, ThinkPad Helix, X230, L430, L530, T430s, T430, T530, W530 Dell XPS 13 (BEFORE 2016) Notice: NOT compatible with Thunderbolt 3 (Type-C). Although the transmission is bi-directional, you may not use MacBook Air/Pro as an external display.