Hard drive docking stations provide computer users with the ability to quickly and easily backup valuable data, access old drives, clone, format and debug disk problems. They're a great tool to have around the home or office. This unit provides two sata docking ports that can accommodate either two 3.5 or 2.5 inch sata drives or one of each depending on your application. It is usb 3.0 ready so all your disk operations will perform up to ten times faster than on older usb 2.0 docks. High speeds and the convenience of dual docks means less time backing up. At the touch of a button, you can clone one hdd to the other. The led display will indicate the cloning progress from 0 to 100. Features dual docks usb 3.0 usb 2.0 compatible hdd clone transfer rate usb 3.0max 5gbps, usb 2.0 max. 480mbps power 12v, 2.5a compatibility windows 2000xpvista788.110. Macosr 9.110 width 146.0mm height 115.0mm depth 71.0mm