The Aluratek external SATA Hard Drive Duplicator is the perfect solution to back up the exact data of your computer's hard drive at the touch of a button. All you need to do is insert your current 2.5" or 3.5" SATA hard drive to one side of the duplicator dock, then insert your new backup SATA drive into the other side of the duplicator dock and press the start button. The LED indicator light will show the status of the duplication process.