SD / TFTF card reader: SD and TF cards can work simultaneously, read and write speed depands on cards' quality. Comply-with USB C interface specification built in conversion chip,plug and play.<br />This multiport USB C adapter provides one Type-C pass through Female port by which you could securely charge connected laptop or other Type-C laptops.<br />USB3.0: Hight speed USB3.0 transmit 5GB/S, Power supply up to 4.5W max.<br />This USB C adapter is light and compact, you can put it in your pocket easily. You can conveniently take it on-the-go for business travel and more. ">