About this item 6 in 1 Multiport USB C HubThe intelligent USB C dock perfectly combine all functions you need.It extend one Type C port to 4K HDMI port*1, USB 3.0 port*2, , USB-C charging port*1, SD card slot*1 and TF card reader*1.Perfectly settle the problem of only one USB C port of your laptop.. . Super Speed USB 3.0 & SD/TF card readerUSB 3.0 port allow you to connect keyboard, Mouse, U disk, hard drive and etc to MacBook Pro, up to 5Gbps data transmission speed. No need wait for data transfer.Universal SD/TF Card Reader, ideal for photographers and designers. [100W power transmission] the C-type charging port is equipped with an upgraded super intelligent chip, which can transfer up to 100W power to usb-c powered devices, and provide additional power for HDD, DVD drives and accessories connected to the USB port. Don't worry about your device running out of power anymore. Solid build, Good Heat DissipationAluminiun case design minimizes interference for stable signal and promotes better heat dissipation.Sturdy cords, solid casing,braided cable ensure this USB C adapter can last a long time.