The Aleratec HDD Cruiser will simultaneously sanitize up to 4 HDDs to assure that all confidential datal is unreadable. It can also duplicate up to 3 HDDs simultaneously. The sanitizing capability is particularly important with the rapid advancement of hard drives; upgrading existing drives is commonplace and it is important that confidential data be removed from the old drives before they are recycled or discarded. The HDD Cruiser is a stand alone unit and no computer is required for operation so there is no need to tie up a computer for hours running complex software to duplicate or sanitize hard disk drives.