6 IN 1 USB C HUB: The USB-C hub adapter is compatible with all devices that contain Type-C / USB ports, especially for MacBook Pro and Air. USB C HUB 6 in 1 includes one USB 3.0 and one USB 2.0, one USB C port, one 4K HDMI port and SD/Micro SD card reader slots, compatible with MacBook Pro/Air, Chromebook and other Type-C devices. So that you can solve the problem of a single laptop interface anytime, anywhere. 4K HDMI: The USB-C dock supports high resolutions up to 4K 3840 x 2160 @ 30Hz and streams 4K or Full HD 1080p videos directly to HDTV, monitors or projectors and is backward compatible with 2K/ 1080p / 720p resolutions. Type-C Hub also supports OTG function, which allows you to transfer files/pictures/videos from USB to your smartphone directly. (Power the HUB from the PD port while using HDMI for perfect performance! ) Dual-Core Technology, PD Fast Charge: Aviation aluminum body and optimized heat dissipation system ensure better heat dissipation and safe use.