A Slim Multi Card Reader for: SM (SmartMedia Card) or xD Picture Card or SD or SDHC or SDXC or miniSD or miniSDHC or MS or M2 or MS Duo or MS PRO or MS PRO Duo or MagicGate MS or MS Micro or MS PRO-HG or MS PRO-HG Duo or CF or MicroDrive or MMC and RS-MMC memory card, etc... Blue all-in-one external multi-card reader or writer for fast access to most common media cards.Please note: 4M, 2M, 1M cards and 5 V cards cannot be read. Compatible system: Windows 10 or 8 or 7 or Vista or XP or 2000 or above andamp Mac OS X Version 10.2 or 10.3 or 10.4 or 10.5 or 10.6 or or above. Quick and easy transfer of data, music, pictures directly from a memory card on to a PC or laptop. No need for an extra connection cable or additional driver installation. The perfect companion for office work, travel and business. Drive Letter Recognition Software: provided for easy identification of each media on your PC. 4 card slots can work simultaneously, high-speed and stable. Simple plug-and-play operation: USB Powered - No external power supply needed. 23 inches connecting cable USB 2.0 connection for fast data transfer (Backward compatible with USB 1.1). Pocket-sized design for easy transport everywhere you go.