BEFORE PURCHASE NOTE:?? Make sure your laptop or PC supports Thunderbolt 3 or display output modeDP ALT mode. OTHERWISE it is NOT COMPATIBLE. If you don't know if your device is compatible with our products send us a message via and we will help youHow 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 screenHow to set Dual display on
Windows: Both mirror and extend mode is available on Windows. StepsPress Windows key + P combination commandChoose Duplicate or ExtendPlug & Play Vivid 4K resolution: No 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 Screens flickering. If your source video or laptop is over 4K@30Hz.
Please lower the resolution as: For Windows Menu Setting Display Advanced Display Settings set your laptop's resolution same as or lower the resolution of external monitor.
For MacOS: Left-upper Apple iconSystem PreferencesDisplaysMirror displays2
Years Warranty: We provide 24 months worry free warranty for this USB-C dual hdmiI convertor please feel free to contact us if you have any question or suggestion we will get back to you in 24 hours.