Hoodman Superspeed USB 3.0 SD/MicroSD Compact Card Reader Space saving compact size - Great for traveling photographers who shoot on SD cards. Quick GoPro downloads - place Micro SD cards directly from GoPro into the reader without need for adapters. maxiumum bandwidth rate of 5 GBps, which translates to 640 MBps - 10x faster than USB 2.0 card readers. USB 3.0 and requires a a USB 3.0 enabled computer to achieve maximum transfer rates. Supports SD & Micro SD cards in SDHC, SDXC & UHS-1 formats - 1 year Limited Warranty