feature Aviation-grade magnesium-aluminum alloy material, with anti-static black film, and double-layer oil transfer technology at the bottom to better protect the hard disk bracket from scratches. The latest improved version, the fixing screws are easy to fall, easy to get stuck, easy to slip, and the hard disk is directly damaged when the screw is installed. The thick aluminum skin not only ensures the sturdiness of the hard disk bracket, but also does not lose the standard thickness of 9.5mm, and the screws are also designed with the latest practical patent to ensure the safety of the hard disk. Shell: Aviation grade magnesium alloy, standard 15-degree hard drive material. The surface is anodized and plated with a double-layer process of transparent insulating film. There are 9 positioning holes on the three sides for precise tapping, which replaces the optical drive and is easy to install. Inner frame: brand new PC+ABS material Hard disk fixing method: four-side locking screws, 3D precise positioning of the hard disk. Product parameters: Product model: All-aluminum thickened version Applicable models: (for reference only) All optical drives are 9.5mm, 12.7mm thickness SATA interface laptops, all-in-one computers, servers, etc. Connect laptop interface: SATA Support hard disk: 2.5 HDD, SATA I II III, SDD (Solid State Drive), 7mm/9mm thickness, the new solution adopts SATA3.0 technology, the maximum speed can reach 6Gbps, the specific operation depends on the channel of the optical drive on the motherboard of your machine Standard decision. Product material: aviation aluminum Product size: 129mm*128mm Hard disk capacity: unlimited capacity (tested 1TB) Package includes 1*tray 1*Screwdriver 4*Screw