The Aluratek AHDU350250 250GB 3.5" External Hard Drive provides the easiest way to expand your computer storage space. With the ever-increasing number of songs, and HD movies in your library, and its increasing size due to its higher quality/resolution, you always need more storage room. With AHDU350250, you will able to increase your storage room up to 250GB with a simple USB connection. With Hi-Speed USB 2.0 at transfer rates of up to 480Mbps, you will able to transfer or backup your mp3's, digital photos, and digital videos in no time.