Aluratek's Tornado plus 2.5" RFID USB 2.0 External SATA Hard Drive provides the easiest way to expand your laptop's storage space. Lock and unlock the drive by RFID (radio frequency identification) key recognition. The compact design and included carrying case makes AHDURS250F perfect for mobile professionals. With the RFID drive, you will be able to increase your storage space up to 320GB 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.