***** **********Best Quality Guranteed. *****BEFORE PURCHASE NOTE Make sure your laptop or PC is support Thunderbolt 3 or display output modeDP ALT mode. OTHERWISE it is NOT COMPATIBLE. Please feel free to contact us if you not sure the compatibility of your device. *****How to set Dual display on MacBook Please noted that MacBook is NOT able to run EXTEND MODE if you enable 2 or above extension display. ONLY MIRROR MODE is available if you connected 2 or above extension display on MacBook. Steps Top left corner Apple iconSystem PreferencesDisplays Mirror or Extend Displays, both HDMI monitor are identical but different with laptop screen.
*****How to set Dual display on WindowsBoth mirror and extend mode is available on Windows. StepsPress Windows key + P combination commandChoose Duplicate or Extend. *****Plug & Play, Vivid 4K resolutionNo driver or software needed. 2 extension display resolution is up to 4K@30Hz, please makre sure us HDMI 1.4 cable or above to avoid Scree