Was looking for the cheapest 1TB portable drive, couldn't find a cheaper one than this.
Usual blurb from website:
The Verbatim USB 2.0 portable hard drive is the ideal storage solution for people on the move.
Combining the large capacity in a light weight drive makes it perfect to carry with you. Store and carry your digital and day to day working files on this truly mobile drive. Its stylish smooth design sits neatly on the modern desk top as the perfect accompaniment to your laptop.
The Verbatim portable hard drive is USB 2.0 bus powered (1 x USB 2.0 interface) and requires no external power for operation; simply plug 'n' play.