WD Passport Portable Hard Drive 250 GB/Go Easy  Installation is a snap because you don't really "install" this drive; you just plug it in and it's ready to use. There is no CD to install; the included software loads from the drive the first time you plug it in. Smart  Powered by the USB bus. No separate power supply is needed. Ultra-portable  This ultra-portable drive fits easily in your pocket or purse, weighs only a few ounces, and holds tons of valuable data. WD Sync - synchronization and encryption software lets you save your critical data and take it with you. Plug your drive into any PC, edit files, read e-mail, and view photos (Windows only). Includes Google Software  Search your drive, manage your photos, and simplify Web searches with included Google software (Windows only).