Seagate 120 GB 2.5" Portable External Hard Drive 8 MB Cache ( ST9120801U2-RK ) Perfect for the extreme traveler, these drives are exceptionally durable with a robust, rugged design, inside and out. They even resist scuffs and scrapes. These portable Seagate drives are highly compact, so they take up very little space in your jacket pocket, briefcase or on your desktop. And they weigh less than a pound. Never worry about data corruption due to overheating. Theyre specially designed, inside and out, to run much cooler than other hard drives. BounceBack Express software from CMS backs up faster and easier than any other method. Powered by your laptop, so you dont need a power supply. Just plug your drive into the USB 2.0 port of your laptop or other personal computer. Compatible with your PC and Mac.