Can the Mac Mini Support a 4K Monitor?
I can confirm 100% that you CAN in fact get 3840x2160 @30Hz 4K from a Late 2012 mini running 10.10.5 using only one MDP to DP cable. I'm writing this using a 2012 Mac mini (Intel HD4000 internal graphics card + 8G ram) with Dell P2815Q 4K monitor. How I achieved this: 1) Used Mini Displayport to Displayport cable that came with the monitor - MDP/thunderbolt from Mac Mini to DP on display. 2) Ran the Mac Pixel Clock Patch for Yosemite: https://code.google.com/p/mac-pixel-clock-patch/source/clones  3) Downloaded and configured SwitchResX, set the resolution, saved and rebooted. Hope the info helps. Enjoy!