[Upgraded 170MB/S Quickly Transfer] The upgraded SD card reader USB 3.0 is designed with proprietary technology, supporting a read speed of 170MB/S and a transfer speed of 5Gbps. The dual high-speed parameters allow you to transfer large files in a flash, bringing you a new high-speed transfer experience. Note: memory card needs to support 170MB/S transfers [2 in1 USB-C/USB Ports Design] No need to be restricted to fixed device connection, switch USB-C/USB 3.0 interface at will.