Multi Format (4 in 1) Black Color Mini USB 2.0 Memory Card Reader / Writer for SD MINISD MMC MOBILE RSMMC Portable Card Reader reads and writes to flash cards and is easy to use/install via plug &amp; play. This 4 in 1 USB 2.0 Memory Card Reader/Writer is for use with SD/MiniSD/MMC/RS MMC USB Reader bus powered, no external power needed. USB Card Reader This Portable Mini Memory Card Reader with USB 2.0 4 in 1 Transparent Black can driver free in Win ME / XP, Win2000 and MAC OS 10.1.2 or later It's compact design allows it to have the ability to be used as a mobile USB flash drive with your memory card