A perfect backup solution for photos, videos and other irreplaceable files for home and business users alike. The GreenDrive II with its variable speed disk uses 40% less power than similar external drives without sacrificing performance. NTI Shadow 4 and Ninja Backup software is included to set up continuous or scheduled backups, customize public and private partitions, manage multiple revisions of files and make backing up and sharing files easier than ever. High capacity and compact size make the GreenDrive II perfect for offsite storage as a precaution in case disaster strikes. FEATURES INCLUDE: 480 MBits/second maximum bus transfer rate with USB 2.0 connection and up to 3GBit/s with eSATA connection; measures 1.4W x 7.8D x 4.5H", quiet fan-free design; Windows/Mac compatible. Supplied with USB and eSATA cables, AC power cord, manual and 2-year limited warranty.