Sabrent SuperSpeed USB 3.0 10-in-1 5 slot Memory Card Reader for Windows, Mac and Linux - Supports SD, SDHC, MMC/MicroSD, T-Flash/MS, MS PRO Duo/XD/CF, and more (CR-ALL3) SuperSpeed USB 3.0 for maximum performance. Backward compatible with USB 2.0 hosts. Supports most common media card types: CF, SD, SDXC, SDHC, MicroSD, XD, MemoryStick, MMC Flashing activity LED indicates file transfer in process Easy to take, use and install, no additional software installation required. USB Bus Powered: no external AC power supply required