Our USB type C adapter has a HDMI (4k 30Hz) output USB 3.0 2 port hub and card reader built in and can all work simultaneously using a single USB C port. This means that if you have a laptop with only one USB type C ports you can use one port to perform 3 functions and add additional devices via the two USB 3.0 ports. This is ideally suited to laptops with two USB type C ports so that one can be used for charging and one can be used for this multi-port adapter. Supports HDMI resolutions up to 4k@30Hz Supports HDCP 2.2 content protection Built in hub with 2x USB 3.0 ports type A USB 3.0 Transmission speed of 5Gbps Card Reader Supports SD/Micro SD cards Black Aluminium shell 12cm lead