1. Product use: charge laptop / mobile phone; Macbook, Chromebook with HDMI port to share movies on larger TV / display / projector; suitable for laptop / mobile phone / tablet with USB-C use. 2. HDMI port: output supports video resolution up to 4K UHD (3840x2160) 30Hz, compatible with 1080P 60Hz, 720P. 3. USB 3.0 port: The transmission speed is up to 5Gbps, and can be used in conjunction with keyboard, mouse, flash drive or USB cable to synchronize and charge smartphones or other devices. 4. USB-C port: Charge the notebook computer through the Type-C female interface, 5W-60W automatically adapts. 5. How to connect: [1] Connect the USB Type-C connector of the adapter to any device that supports USB Type-C HDMI mode. [2] Use a standard HDMI media cable to connect the HDMI output of the cable to an HDTV or HDMI-enabled display.