Aluratek's Tornado 2.5" USB 2.0 External SATA Hard Drive Enclosure provides the easiest way to expand your laptop's storage space. Easily backup your files with the push of a button! The compact design and included carrying case makes AHDUB250 perfect for mobile professionals. With AHDUB250, you will be able to increase your storage space up to 250GB with a simple USB connection. With Hi-Speed USB 2.0 at transfer rate of up to 480Mbps, you will able to transfer or backup your mp3's, digital photos, digital videos, multimedia and personal data files in no time.