(2) Late 2012 models with an Nvidia 680MX graphics card are also supported.(1) The 15' Retina MacBook Pro released in Mid 2015 with an AMD Radeon R9 M370X graphics card is not officially supported.* All Mac Pros released since Late 2013.* All 27” iMacs released since Late 2013 with a 2GB graphics card or better (2).* All 21.5” 4K iMacs released since Mid 2017.* All 15” MacBook Pros released since Late 2013 with a 2GB graphics card or better (1).
To check your Mac model and when it was released, select About This Mac from the Apple menu on your menu bar.