WD  My Passport Essential 250 GB USB 2.0 Portable External Hard Drive (Vibrant Pink) Box Contents - My Passport Essential portable hard drive, USB 2.0 cable, and Quick Install Guide Ideal for storing or backing up your digital music, videos and photos Share large files between office and home System Requirements - Windows 2000, XP, Vista, Mac OS X 10.4.11+, and Available USB port Dimensions - Height 0.59 x Length 4.967 x Width 3.130 (15.0x126.15x79.5mm)