Creates a duplicate bootable copy of your SATA Hard Drive.Is your computer starting to run slower? Are you worried that your hard drive may crash and you may lose all of your valuable data? You are not alone! That is why Aluratek has created the AHDDUB100 a perfect solution to duplicate the exact content currently stored on your computers Sata Hard Drive. What’s unique about this product vs any other external hard drive is that all of your OS (operating system) and program files are “duplicated” in addition to your data files making this a complete backup solution which is bootable. Why is being bootable so important? Because if/when your hard drive fails and you insert your duplicate copy hard drive you don’t miss a beat. Your computer will start up and all of your program files including the OSF (operating system files) will be restored along with your outlook contacts and personal settings.