1,3 ports USB HUB Card reader 2,Support MS/Pro Duo,M2,SD/MMC, ... Micro SD 3,USB 2.0 interface card reader USB 2.0 Card readerHigh Speed USB2.0, Compliance with USB ... 1.16 card slot:1 slot: CF I/CF 22. slot :SDHC/SD/MMC/MM2/RS MMC/ Ultra2 ... bus power Supply ,No external power supply requiredSupport high speed card, Slim size ,easy for carryTransfer files between your computer and ...