I have gained this case in order to read the hard disk of my old laptops can initially and then to be able to use an external hard drive. The installation is very simple: Insert disk, screw housing - a micro-screwdriver is included. TIP: Since the connection between disk and housing is only about the PATA connector, the plate in the housing has a little freedom of movement. Say, it could rattle the housing or (unlikely but possible) slip out of the connector. I have therefore glued prior to installation on the hard drive a piece of foam, which effectively prevents this. CONCLUSION: The price justifies the lightweight design absolutely.