This monitor works fine with my Mid 2014 15" Macbook Pro Retina. I hooked it up as a secondary display using the HDMI port. I have a 4K Lenovo monitor connected to one of my Thunderbolt connections and the other is used by my Thunderbolt Ethernet adapter.
I also connected it to my 2012 Mac mini. When I used the HDMI port I had to use SwitchResX to get the proper resolution. I then bought a miniDP 1.2 to HDMI 4K-capable cable and it worked without needing to use SwitchResX. Discussions I read said the 4K cable was required to get the proper resolution. Since the cost difference in cables was minimal I went with the recommendation.