Features: Support 4K HD quality and supprot two-way charging, video transmission. USB3.0 lossless transmission, the transfer speed of USB 3.0 is 5Gbps. The USB card reader solver the for Macbook without USB port problem. SD and TF card support plug and read, fast transfer and convenient. Support system with USB3.1 type-c prot, such as for Macbook, Windows, Chrome OS.