Get from Amazon.com : http://www.amazon.com/gp/product/B0025KXMKS?tag=hawaiianlegac-20

Seagate Expansion 1.5 TB USB 2.0 Desktop External Hard Drive ST315005EXA101-RK

Plug n play with no software to install
Simply drag-and-drop to save files
7200 RPM performance 15TB
Built-in power management ensures energy-efficient operation
USB 20 Interface