AcomData External 160GB USB 2.0 Hard Drive for PC/Mac (Model HD160U2E3-72) External 160 GB hard drive with high-speed USB 2.0 interface (USB 1.1 compatible) Stackable--add more storage without taking up more desktop space; plug-and-play set up and hot-swap convenience Ideal for desktop publishing, graphics, data back-up, and for storing digital video, audio, photos 7,200 rpm, 2 MB buffer PC and Macintosh compatible