100GB USB 2.5 Simple Drive Portable Black Product Description SimpleTech SimpleDrive Portable - hard drive - 100 GB - Hi-Speed USBType Hard dr Form Factor 2.5" Dimensions (WxDxH) 3 in x 5 in x 0.6 in Capacity 100 GB Interface Type Hi-Speed USB Data Transfer Rate 480 Mbps Spindle Speed 5400 rpm Buffer Size 8 MB OS Required Microsoft Windows 2000 / XP, Apple MacOS 9.2 or later Manufacturer Warranty 3 years warranty