Transcend StoreJet 320 GB 2.5-Inch USB 2.0 Anti Shock Hard Drive TS320GSJ25M Transcend StoreJet 25 Mobile 320 GB 2.5-inch USB 2.0 External Hard Drive General Features: 320 GB capacity 2.5-inch SATA hard drive High-speed USB 2.0 interface (USB 1.1 backwards compatible) High transfer rate of up to 480 Mbps One Touch Auto-Backup button LED indicates power on and data access Advanced dual stage anti-shock technology