WOLVERINE 3250S -- Is your hard drive full? Need to back up essential files? Need to travel with large data files? Not a problem -- Wolverine Data is one step ahead, ready with a portable solution -- the 250GB Professional Series Hard Drive! 7200 RPM spindle speed Average seek time - 8.5 to 9.5 ms Median transfer rates of 30MB/sec (with USB 2.0) Compatible with Microsoft Windows 98SE, ME, 2000, XP & Mac OS 9 and above Package includes AC Adapter, USB 2.0 cable, Manual & Win98SE Driver on CD-ROM, Backup Software CD Dimensions (centimeters) - 3.8 High x 12.5 Wide x 22.6 Deep Warranty - One Year