Verbatim Acclaim 500 GB USB 2.0 Portable External Hard Drive 97165 (Piano Black) 500 GB, USB 2.0 High-Speed: 480 Mb/s (max), USB 1.1 Full Speed: 12 Mb/s One of the industries smallest hard drives Windows and Mac compatible Nero BackItUp software, Bonus Norton Online Backup (5GB) and eMusic offer of 35 MP3s included. Software compatible with Windows operating systems only Backed by a 7-year limited warranty