The 1:1 HDD CRUISER is a standalone unit there is no need to tie up a computer for hours running complex software to duplicate hard disk drives. The 1:1 HDD CRUISER has a USB 2.0 port so any hard drives loaded in the machine can be accessed by a PC.The 1:1 HDD CRUISER's drive bays are equipped with quick and easy loading doors. Simply open the drive bay door to load or unload a drive. Slide the drive in the drive bay and close the drive bay door and high integrity electrical and data connections are made automatically. Each drive bay has non scratch SATA connectors designed for greater than 50,000 swap cycles minimizing worries about drive connection issues.Duplicate hard disk drives without a computer. JBOD feature with USB 2.0 connection to format/transfer files to HDD from PC. Quick load drive doors. NSS (Non Scratch SATA) connectors, 50,000 swap cycles. Insert drive, close door, and start copying. Supports 3.5" inch SATA HDDS.