Question about HP 2013 UltraSlim

I haven't tried 4K, but we wanted to use this docking station with 49" ultrawide screens (5120x1440) and we couldn't get this resolution. The older docks with only one Displayport, on the other hand, work, so we collected the old stations for the new screens.

According to the HP homepage, DisplayPort™ 1.2 is supported = Max. Resolution 3840 x 2160 / 60 Hz - so yes, 4K