USB C/USB A to HUB adapter,which supports Windows,Mac OS and Android devices featuring the USB C slot. It make your laptop's USB C slot to be more ports Make you more easy and convenient o work. Supports TF/SD card read & write. 1.Compilant to USB3.0,USB1.1/2.0 Specification. 2.Supports USB3.0 High-Speed up to 5Gbps and USB2.0 up to 480 Mbps 3.Equipped with over-current Detection&Protection 4.Supports TF/SD card read & write(Remarks:TF/SD can't read & write at the same time) 5.Supports plug&play 6.Build in 5V USB C DC USB powered port