Iomega 250GB PORTABLE 2.5" hard drive £39.11 Tesco Instore & online.
Not to be confused with the larger 3.5" drives!
Take your files and applications anywhere! The pocket-sized USB powered Iomega® PrestigePortable Hard Drive requires no external power supply just plug it in and go.
Easy-to-use : USB 2.0 interface available with no external power supply required
Compact : Ultra portable fits easily into a shirt or pocket
Secure : EMC® Retrospect HD (PC) license is included for easy file backup (software available via easy download)
Rugged : Sturdy aluminum construction; Drop Shocktechnology on all models