40GB USB 2.5 Simpledrive Portable SimpleTech SimpleDrive SP-U25/40 40GB USB 2.0 Portable Hard Drive General Features: Slim, compact stylish (designed by Pininfarina) Charcoal Gray color Ruggedized for travel 40 GB capacity Hi-Speed USB 2.0 5400 RPM with 8 MB buffer (cache) 2.5-inch form factor Includes StorageSync backup software (Windows only) No external power required Plug and Play simplicity