Asunflower&reg; 5 in 1 Micro USB OTG Smart Card Reader Adapter for Samsung Galaxy S4 S3 Compatible Model: Samsung Galaxy S3/S4 * USB 2.0 port, fully ompatible with USB 1.1, high transmission speed Support systems WindoesS Vista / 2003 / XP / 2000 / ME / 98SE /98, Mac OS 9.0 or above, without drive * Supports to read SD/MMC/MS/M2/MINISD/TF cards directly USB cable powered, no external power supply requirement Can be used both with laptop and desktop computers * Material: Plastic Plug and play, convenient and fast to transfer data from your MP3, PDA, mobile phones, cameras or other devices to hard disk with USB interface, so that you have no need to carry an expensive memory card