Yeah, I wanted to ask why you were bothering with 4k monitors to begin with. You'd get much more bang for your buck with an Apple Thunderbolt display or something similar.And gotcha on the double monitors thing, I am not sure if I misread it above or it was phrased that way but I understand now.Edit, relooked at it and the way you posted made it very much look like 2 monitors from one Mini:
We have 2 x DELL 4K monitors (both P2815Q) Connected to (same setup) Late 2012 Mac Mini running 10.9.3 connected via Mini DP to DisplayPort. All cables, keyboard and mice.everything is exactly the same...