The GFR304SD 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. It is also backwards compatible with devices that are under USB 2.0 and USB 1.1 specifications.