13" early 2015, Intel Iris 6100. To get two 4k@60 outputs, I have to run two cables (it has two TB2 ports). With daisy-chaining, I got mirroring at best (I did

13" early 2015, Intel Iris 6100. To get two 4k@60 outputs, I have to run two cables (it has two TB2 ports). With daisy-chaining, I got mirroring at best (I didn't check refresh rate at the time, though).