"External Graphics card over Thunderbolt Suggestions"に関する回答I have made work a Nvidia Quadro K1200 in a Mac Mini Late 2012 (Mac os El Capitan), through a Sonnet echo express Se II without additional power supply. Thats awesome but I am fighting to solve a problem which mentioned Niklas: "...Apple is limiting 4k displays by only making the 60Hz..." I am working in a UHD TV in 4K resolution but I can't switch up to 60hz, 30hz is the limit. I have tried multiple things including SwitchResX but I can´t put the 4k resolution 60hz... I know my TV supports it, the cables and of course the graphic card. Could you help me? Greetings!