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