The External SATA Hard Drive Duplicator from Aluratek is an external desktop dock for SATA disks that allows you to create an exact duplicate of the content currently stored on your computer's internal hard drive. Simply dock your computer's internal 2.5" or 3.5" SATA hard drive to one side of the dock, and a new, blank drive to the other. Press the start button and the device will create an exact copy of your drive, which can be booted from with ease.