This question already has an answer here:

Does Early 2015 MacBook Pro output 4K 3840 via Mini DisplayPort to DisplayPort? I seem to get only HD max option on YouTube videos.

I have a Samsung U32J590U 31.5" 4K UHD monitor. If not, do I have to get a real Thunderbolt cable or is HDMI-to-HDMI the answer?

marked as duplicate by Tetsujin, fsb, IconDaemon, Nimesh Neema, Allan Apr 9 at 19:59

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.


Display Support:

Supports an HDMI-compatible device, including 4K, while using one Thunderbolt display or support for two Thunderbolt displays

External Resolution:


  • 3840 by 2160 pixels at 30Hz

  • 4096 by 2160 pixels at 24Hz


  • 3840 by 2160 pixels at 60Hz

  • 5120 by 2880 pixels at 60Hz (with Radeon R9 M370X)

Not the answer you're looking for? Browse other questions tagged .