The m4 from Crucial is a lightweight Solid State Drive with ahuge storage capacity and a 6 Gbps interface for super-fast transferrates. The m4 comes complete with a transfer kit, which includes aUSB-SATA cable, EZ Gig III Cloning and Imaging software for Windows,and ShirtPocket's SuperDuper! software for Mac. Thanks to this kit, youcan copy the data from your hard drive, including your O.S. to the m4 SSD from Crucial.