<ul><li>1. Aero grade magnesium aluminum alloy case, standard 15 degree hard optical drive material.2. The surface has been anodized and coated with transparent insulating film.3. Three surrounding 9 positioning holes accurately attack teeth, instead of the optical drive, easy to install.4. New original Taiwan import transfer interface, the bad product rate is not more than 1/1000.5. Hard disk fixed mode: four side lock screws, 3D accurate positioning hard disk.6. Application: universal all optical drive is 9.5mm thickness</li></ul>