2023 UPGRADED VERSIONExpands computer ports into a HDMI 4K output port, a USB 3.0 port, a USB-C charging port.Three ports can work at the same time. Easily expand usb c devices and fulfill your daily use 4K UHD HDMI PORT Enables you to mirror or extend the display of your phone/laptop to your TV, projector or monitor in up to 4K UHD (3840x2160@30Hz) resolution. Help you enjoy nice pictures on movies and work