They range in storage capacity from 250 GB up to 1 TB, although out of the box this amount is diminished because of the installation of SmartWare, WD's user-friendly software.
Passports have slim cases constructed of heat-sinking materials such as aluminum - which compensates for the lack of built-in fans. My Passport drives are designed for on-the-go use, unlike the enlarged devices found in the My Book series. My Passport is one of the external storage product lines produced by Western Digital, or WD.
