The U352-000-MD-AL supports USB 3.0 transfer speeds up to 5 Gbps, which is 10 times faster than USB 2.0. Backward compatible with previous USB generations, so data can still transfer regardless of your device. Compact aluminum case with built-in 6-inch USB cable fits easily into your pocket, backpack, briefcase or laptop bag, so you can read and write files at a moment's notice. No software, drivers or external power supply required.