USB C to HDMI AdapterDnkeaur USB C to Dual HDMI Adapter is able to connect a USB C port to two HDMI displays. Note: Windows OS supports expansion of 2 different display screens; Mac OS supports expansion of only 1 screen. USB C Docking Station Dual MonitorWhen a single HDMI port is working, the resolution is up to 4K@30Hz. When both HDMI ports are working, the maximum supported resolution is limited to 1080P. This USB C to HDMI adapter is backward compatible with 60Hz for resolutions of 2K/1080P. NotePlease make sure to use a HDMI 2.0 cable or better. Wide CompatibilityThis Dual Monitor Adapter is compatible with Windows, Mac OS, & Android systems, with compatible Thunderbolt 3 and DP 1.4 alt mode. Laptop Docking Station Dual Monitor for Dell XPS, LG, HP, Samsung Galaxy, etc. Note:(The USB C port on the laptop must be in DP ALT mode or Thunderbolt 3 / 4 to enable the expansion of the display. Plug and PlayNo external power supply is required for this USB C to HDMI Adapt