Nimitz 2nd HDD SDD Hard Drive Caddy for Macbook Pro Unibody with External USB Enclosure Add a 2nd drive to your macbook pro by replacing your superdrive Newest version, without bottom cover, the lower case of the macbook pro can be closed strictly.(pictrue #6) This item only fits unibody models (Late 2008/Early 2009/Mid 2009/Late 2009/Early 2010/Mid 2010/ 2011/2012),Not Compatible for Retina Macbook Pro. Package Content:1x 2nd hard caddy for Apple MacBook/ MacBook Pro,1x External USB enclosure including cable and screw,tools kit ( Torx T6x25mm screwdriver, Phillips 1.5x25mm screwdriver and spudgers) Note:the drives not included