2 flash adapter card reader for 1 usb ogg smartphone and pc micro-usb ogt tf/sd cabezal

flash adapter card reader for 21 usb ogg smartphone and pc usb ogf/sd cabezal 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 computers, smartphones and bidirectional transfer memory for data... 4 full-speed usb 2.0 transport protocol with a maximum transmission capacity of 480 megabytes per seco