TeckNet USB 3.0 All-in-1 Memory Card Reader Adapter 8 in 1 for SDXC, SDHC, SD, MMC, RS-MMC, Micro SDXC, Micro SD, Micro SDHC Card, Support UHS-I Cards USB 3.0 enables data transfer rates of up to 5Gbps for faster sync times, backward compatible with USB 2.0 / 1.1. Fully powered via your USB port - no additional power supply required. Fully powered via your USB port - no additional power supply required. Compatibility: Windows XP / Vista / 7 / 8 (32bit/ 64bit ) No drivers required for Windows 8 / 7 / Vista