With the LogiLink docking station you can connect up to two 2.5 or 3.5 inch S-ATA hard drives to your computer without the PC open or using an external hard drive enclosure. You simply connect the included USB 3.0 cable with the computer. Now the hard drive can be inserted into the top opening of the docking station. With LED indicator for power and data flow. Pushing the eject button will disconnect the hard drive can be removed. When connecting two drives the clone feature can be used for cloning the hard drives without a PC.