Seagate FreeAgent GoFlex Ultra-Portable 2.5" 1TB USB2.0 - Black
As the worlds most upgradable portable hard drive and the core of the GoFlex Storage System the GoFlex ultra portable drive gives you USB 2.0 transfer speeds.
Seagate has created the GoFlex Storage System which includes the GoFlex ultra portable drive to make it easy for you to upgrade your interface for faster transfer speeds