USB -C - Double HDMI Adapter HUB 2 in 1: Attention: For Mac OS, you cannot expand two different screens due to mirror mode, Mac OS restriction; Connect the device to two external monitors with 4K HDMI output with the USB Type C (Tunderbolt 3) port; With your family, you can enjoy movies and games on the external Ultra HD big screen; Windows operating system supports both SST and MST mode, please us if you are not sure how to set it or download the user guide from product information-> Product Information section .Geenish compatibility: (Note: Not for laptops with all USB-C port, this adapter cannot work with HP Pavilion/Lenovo Ideapad, you need to confirm that your main device supports the video output or DP sub-mode of your main device, and in this case you can see the DP normally next to the connection point). This HDMI reader, MacBook/MacBook Pro2021 2020 2019 2018, 2018, MacBook Air2020-2018, iPad Pro 2018, Dell XPS13/15, Samsung Galaxy S9/S9+ etc. Thunderbolt works well with 3 compatible devices .CANLI 3D EFEPT VIDEO SYNCONINATION: From this USB C to the HDMI adapter to 4K (3840x2160p@60HZ), double monitor with HDMI at 3840x2160@30Hz; The dual monitor HDMI adapter also supports 1440p and 1080p at 60Hz presented by DisplayPort MST technology; When playing games with this high-performance USB-C adapter, play the screen without any delay of milliseconds. (Important: only when your devices support 4K resolution, the video output will be 4K, please make sure you use an HDMI 2.0 cable or better.) .ZAHMETSAZ INSTALLATION: Multiple flow transport an easy installation by working locally on the device that supports DP sub-mode via USB Type-C; SELORE DOUBLE HDMI MONITOR ADAPTER MAKE AND RUN, DRIVERS OR SOFTWARE IS NOT REQUIRED. (Note: Please first connect the monitor (HDMI port), then connect the laptop (USB C port). To transmit sound, you may need to change the 'default audio output device' settings in system preferences.) What do you get: 1 USB Type C adapter, 1 user manual, 1 -year defective product refund/change in the Selore, and a friendly customer ; If there is any problems with this dual HDMI converter (for example: how to set, how to set it ...), please feel to let me know. I will always do my to help to help