3 in 1 usb high speed ogs flash driver usb2.0 universal ogtf/sd/mmc telephone extension card reader

3 in 1 usb flash card reader usb2.0 universal ogtf/sd/mmc card reader, if you have any questions, please contact us. thank you very much. product characteristics:. small shape factor, easy to carry 2 usb to male, designed double plug miniature usb, smart phone and computer compatible with dual interface. no data is transmitted through smart computers, telephones and bidirectional transfer memory cards... 4 fully high-speed usb 2.0 transport protocol with a maximum of 480 megabytes per second fi