Specification: Caddy Thickness:9.5mm Caddy Interface: SATA Hard Drive Interface: SATA (2.5" sata and ssd drives) This 2nd Hard Disk Drive Adapter can increase your storage. It enables you to add a second notebook hard disk drive to your modular/optical bay. Compatible with: For 9.5mm Laptop SATA to SATA 2nd HDD HD Hard Driver Caddy for 9.5mm Universal CD/DVD-ROM Installation method: 1, Unpack the hard drive, Lift the hard drive caddy retaining latch, The Screws to the hard drive. 2, Insert the hard drive into the hard drive caddy. 3, Slide the hard drive into the connector until it locks into place. 4, Lower the hard drive cdaddy retaining latch until it snaps closed. Package Included: 1 x 2nd HDD SSD Hard Drive Caddy + Screws(Has been installed)+Screwdriver a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a a