These elegant portable drives are simple to use, light and easy to carry, and require no power adapter -- they are powered directly through the USB cable. Pack up your office files and take them home. Carry thousands of songs or pictures. Synchronize files between home and office and encrypt everything on the drive for added security. WD Sync synchronization and encryption software lets you take your critical data with you. Plug My Passport into any PC, edit files, read e-mail, and view photos. Then sync all of your changes back to your home or office computer. Your data is protected with 128-bit encryption (Windows only). Perfect for the business traveler who needs to transfer large amounts of data from laptop to clients or just daily backups in case of accidents from mishandled luggage to coffee spills. Also comes in handy if your worried about laptop theft and someone else having access to your important data, you can store it on this portable encrypted drive instead. For all those precious pictures, videos, music and data files, getting this external hard drive is a must have. 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. Then sync all of your changes back to your home or office computer (Windows only) Search your drive, manage your photos, and simplify Web searches with included Google software (Windows only) Up to 480Mb/sec Bus Transfer Rate with USB 2.0 System Requirements - Windows 2000/XP/Vista, Mac OS X (10.1.5 or later), Available USB port Approximate Unit Dimensions - 0.59 (H) x 4.96 (L) x 3.14 (W) Approximate Unit Weight - 0.23lb