Works great with 1x4K 2xHD Monitors with LandingZone Dock The free version works great with 4 screen, I have a 4K monitors with 2 additional 1080p Monitors, with this software, I can ensure my external 4K running @ 60 Hz, and able to adjust resolution during persentation in just 1 mouse click since most ppl can not see 4k high resolution text during onine presentation time due to video compression