This USB C Hub to Dual HDMI 4K 60HZ Docking Station is designed for laptops, tablets, and cell phones with USB-C (Type-C) interface. It supports extending video and other content to the same screen or large screen display devices. The device has two modes: same-screen and expansion. The same screen mode displays the same content on the computer and HDMI monitor, while the expansion mode displays different content. The HDMI maximum supports Ultra High Definition 4K (3840 x 2160, @60Hz) resolution output. When only 1 HDMI port is connected, the transmission resolution is 4K@60Hz; when only 2 HDMI ports are connected, the transmission resolution is 4K@30Hz. The device supports Windows and macOS system laptops and can be applied to watching video, video teaching, meeting projection, and other scenarios.