A docking hub is your solution to gaining more variety of ports for your laptop. It offers five different ports: HDMI, USB-C, USB-A, USB-C (DC in) and a micro-SD/TF card slot. The HDMI port supports high-definition, 3-D and 4k/1080p video transmission, sound and picture synchronisation. USB-C (DC in) port supports fast-charging devices and can be used to charge the laptop directly. USB-A and USB-C ports allow data transmission as well as charging any USB-C charging devices.