WD  My Book Essential 160 GB USB 2.0 Desktop External Hard Drive Western Digital WDH1U1600N My Book Essential Edition 160 GB External Hard Drive General Features: Black color Blue LED indicator 160 GB storage capacity 3.5-inch form factor USB 2.0 interface (backward-compatible with USB 1.1) Serial bus data transfer rates of up to 480 Mb/sec Holds up to 40,000 MP3s or 45,000 JPG files (approximate)