GooQee 2-Bay Aluminum HDD Rack 5.25 inch to 2.5 inch Internal SSD Hard Disk Drive Holder Mounting Bracket Converter Adapter(2 bay 5.25" to 2.5" Blue) Expand storage space : Usually, there are several optical drive bays of computer case and most of them are not used. GooQee 2.5" internal HDD/SSD mobile rack, supports to install 2 x 2.5 inch HDD/SSD, expanding storage space, effective utilization. Standard specification for optical drive bay: GooQee 2.5" internal HDD/SSD mobile rack perfectly fitting with the optical drive bay, accurately locating the site of case, hard drive and screw hole, easily expanding storage capacity. 8 mounting screws included. Open installation design: 2mm thick aluminum chassis, hollow design and open installation provide good heat dissipation for hard drive, protect hard drive and prolong hard drive's useful life. Stable structure, superior material: 2mm thick aluminum chassis with solid and stable structure keeps the shape even in high temperature, uneasy to be scratched. DIY, enjoy the life: Install GooQee 2.5" internal HDD/SSD mobile rack with 2 groups of screws, do it yourself, experience more fun.