Archgon USB 3.0 Aluminum Dual-Bay 2.5" & 3.5" SATA HDD/SSD Hard Drive Enclosure Docking Station with Standalone Clone Duplicator Function Model MH-3621-U3 Aluminum body dual-bay 2.5/3.5 inches SATA HDD docking station USB 3.0 super speed (backward compatible with USB 2.0) Smart off-line clone function-clone a 2.5/3.5 inches SATA drive without a host computer connection Sector-by sector HDD duplication-hidden partitions will not skip Compatible with windows & mac OS