What is the compatibility Thunderbolt and Thunderbolt3 Imac27 2012 Imac 21,5 Retina 4k 2017?
If to buy Thunderbolt 1-2cable and connect to Imac 27 2012 (requires thunderbolt or thunderbolt2) and Imac 21,5 2017 (which has thunderbolt3) would them get to connect properly? What is the compatibility Thunderbolt and Thunderbolt3 Imac27 2012 Imac 21,5 Retina 4k 2017? Which cabel shouldbe bought?