Industrial 3.5" to 2.5" 12Gb/s HDD SSD Hot-swap Rack Patented Screw-less HDD Mounting Design for Standard (9.5mm) 2.5" HDDs and SSDs Metal Body for Best Heat Dissipation High Performance Transfer Rate up to 12Gb/s Support 2.5" SAS I/II/III & SATA I/II/III HDD/SSD Thumbscrews for Easy HDD Swaps Product Introduction Industrial design iStarUSA T-G35-HD hotswap hard drive cage. With unique screwless HDD mounting patented design, high performance 12Gb/s interface, and easy swap tray design, T-G35-HD is tough in strength but flexible in functionality. By popular demand, the LED display light features blue light to show hard drive power and red light for HDD accessing. And the metal security key lock prevents unauthorized access to your important hard drives.