IOGEAR's latest card reader/writer is equipped with SuperSpeed USB 3.0. The SuperSpeed USB 3.0 SD/MicroSD Card Reader/Writer is the perfect solution for super-speed* data and file transferring. Up to 10x faster than USB 2.0 card readers, this new device will transfer data up to 5Gbps , That's fast. Quickly download HD videos, HD photos, and documents to your computer. The GFR304SD works with all major memory card formats and supports high capacity. The compact design will allow you to take it anywhere, giving you the freedom to share content from you smartphone, or tablet anytime. The GFR304SD from IOGEAR is also backwards compatible with devices that are under USB 2.0 and USB 1.1 specifications. Device must be plugged into a USB 3.0 port in order to achieve super-speed rates. Requirements : PC; Windows XP, Windows Vista, and Windows 7; Available USB port (USB 3.0 port for SuperSpeed mode)Mac; Compatible with USB 2.0 and 1.1 Supporting Media List: - SD/SDHC: SD, SDHC, SDXC, MicroSDXC, SD-Pro, SD-Pleomax, SD-Pro C, Ultra II SD, Ultra II Plus SD, SD-Extreme III, SD-Ultra X, SD-Turbo, SD-Supper, SD Max, Mini SD, Mini SD-Pro, Mini SD-Pleomax, MMC, MMC-Pleomax, MMC Pro, HS-MMC, MMC Plus, MMC-Plus Turbo, RS MMC, RS MMC-Pleomax, RS MMC-Speed, RS MMC-Max, MMC Mobile, MMC Mobile-ProC, MMC Mobile-Pocketnet, MMC Micro - Olympus DC Card: Olympus DC Card, Olympus DC Card (M), Olympus DC Card (H) - microSD/microSDHC: microSD/microSDH.