USB C to Dual HDMI Adapter: This Dnkeaur USB-C adapter features 2x HDMI port, 1x USB 3.0 port, and 1x PD charging port, Note: Android system only supports AAA mode(mirror mode); macOS supports AAA, and ABB mode (does not support MST ABC mode); Windows OS supports AAA, ABB, ABA, and ABC mode. 4K Vivid 3D Effect Video Sync: The HDMI ports with resolution can be up to 4K@30HZ. when dual HDMI work, HDMI only can be up to 1080P. The usb c to hdmi adapter backward compatible with 2K /1080P at 60Hz. With this high-performance USB-C adapter when you play games the screen without any millisecond delay. (Important: ONLY when your devices support 4K resolution, the video output will be 4K, please make sure to use a HDMI 2.0 cable or better.)