This 9.5 12.7mm HDD Caddy is made of aviation-grade magnesium-aluminum alloy material and features a double-layer oil transfer technology to protect the hard disk bracket from scratches. It supports 2.5 HDD, SATA I II III, and SDD (Solid State Drive) with a maximum speed of 6Gbps. The caddy is designed for easy installation and comes with a screwdriver and screws. It is compatible with all optical drives that are 9.5mm, 12.7mm thickness SATA interface laptops, all-in-one computers, and servers.