Of course the gardware supports it, otherwise I couldn't connect the second rotated screen through HDMI. But I couldn't figure out why OS-X fails to support DP-MST. If it's because they want to push their own screens then shame on Apple.
It's ridiculous that they refuse to support this. Iit's actually backfiring. Peoppe at work laugh when they see me attaching two cables to my Macbook ehile everyone else with different operating systems use their docking stations or daisy chaining. Even old Chromebooks support it.