1. External Combo USB2.0 card reader/writer With microSD, M2, MS, SD/MMC,XD 5 Slots and 3 USB2.0 ports HUB 2. Hot-swappable supported, plug-and-play,USB 1.1 /2.0 compatible 3. O/S supported: Windows 98, 98SE, ME, 2000, XP, Vista ,Apple Mac OS 8.60 or later and Linux2.4 or later 4. No driver required except Windows 9X 5. No external power required, just powered by USB port 6. Regulated power IC is installed to protect card reader and flash memory card 7. High read speed: over 4.3Mbps, high write speed: over 1.3Mbps 8. Supports microSD/TFlash and M2 directly no adapter needed. 9. Supports all kinds of memory card: 1).MicroSD/TFlash slot: microSD,T-Flash 2).M2 slot: M2 3).SDHC/MMC slot: SDHC,SD,Mini SD, SD Pro,SD Elite Pro,SD Ultra,SD Ultra II,SD Extreme,SD Extreme III,SD HIGH SPEED 150X,MMC,MMC 4.0,MMC HIGH SPEED,MMC mobile,MMC plus 200X,RS MMC,RS MMC 4.0,RS MMC DV,RS MMC HIGH SPEED. 4).MS slot: MS,MS Pro,MS Pro MG HIGH SPEED,MS Pro MG Extreme,MS Pro MG Extreme III,MS Duo MG HIGH SPEED,MS Duo,MS Pro Duo,MS Pro Duo MG Ultra II,MS ROM, MS Pro Duo MG HIGH SPEED,MS Pro MG Ultra II,MS Magic Gate,MS Pro Magic Gate,MS Duo Magic Gate,MS Pro Duo Magic Gate,MS Memory Selection Function. 5).XD slot: XD,XD M type.