Metal shell: gold, black, gray (three-color selection) HDMI port: output support video resolution 4K UHD (3840x2160) 30Hz, compatible with 1080P, 720P. USB 3.0 port: The transmission speed is 5Gbps, which can be used with keyboard, mouse, flash drive or USB cable to synchronize and charge smart phones or other devices. USB-C port: Charge the notebook computer through the Type-C female interface, 5W-60W automatically adapt. How to connect: Step 1: Connect the USB Type-C connector of the adapter to any device that supports USB Type-C HDMI mode. Step 2: Use a standard HDMI media cable to connect the HDMI output of the cable to the HDTV or HDMI-enabled display.