usb card reader 1. usb 2.0 hi-speed card reader. 2. support M2,Micro SD,MMC,SD card. 3. Windows Vista,XP,2000,Mac OS X. USB Card ReaderUSB ... 2.0 Hi-Speed card reader.Fast ... SD.Slot 3:Micro-SD(T-Flash).Slot 4:MMC,MMC Mobile,RS-MMC,Memory Stick,Memory Stick Pro,Memory Stick Duo... usb card reader ...