Ultra transmission, Super propertyThe card reader is allocated with USB 3.0 interface with possible highest transmission speed up to 5Gbps, saving half of your time for reading and transmitting. Compatible for multi-systemsThe 3.0 USB card reader could be compatible with most main-stream system, like: Windows XP / Vista/ 7/ 8 (32/64-bit), Mac OS 9.x or higher, in no need of drive, you could use it upon plugging it with your Smart devices. Small is good, Metal is fashionSolid aluminum body with rounded corners complements your desktop or laptop. Ultra-miniature (3.3 × 1.8 × 1.1in) and lightweight (3.9oz), free yourself from cable-chaos and put your workspace back in order - all without taking up too much space. Solid with USB cable20cm Built-in cable provides anti-jamming capability and ensures more stable transfer. You could put it at the PC host, or at the desk beside your laptop,tablets and ipad. Quite practical for office using and home stay. More cards, More convenient This smart memory card reader could support 3 main category cards,more than 25 popular memory card formats. CF slot: CompactFlash Type I, CF Elite Pro, CF PRO I, CF Turbo, CF Ultima I, Extreme CF,Extreme III CF, HS CF, Ultra II CF. SD slot: SecureDigital (SD), Elite Pro SD, Extreme III SD, Gaming Edition SD, , Platinum II SD, SD Pro, SDHC, SDXC,SD-Max, SD-Pleomax, SD-Pro C, Super SD, Turbo SD, Ultima I SD, Ultima II SD, Ultimate SD, Ultra High Speed SD, Ultra II SD, Ultra II SD Plus, Ultra SD, Ultra-X SD, DV-RS MMC, High Speed MMC / RS-MMC, MCCmobile, MMC Pro, MMCplus, MMCplus Turbo, RS-MMC. Micro SD slot: MicroSD (TransFlash), microSDHC.