Western Digital My Book Pro Edition 250GB External Hard Drive with Triple Interface (WDG1T2500N) Store and back up your music, photos, videos and important documents with this external hard drive Easy to set up and use with built-in installation software; also comes with EMC Retrospect Express for backups Triple interface features FireWire 800, FireWire 400, and USB 2.0 connectivity Device holds up to 250 GB of data and is built with an easy-to-read capacity gauge Measures 5.55 x 2.25 x 6.71 inches (WxHxD)