System files or user files are stored on the SSD. Correct installation of a solid-state drive directly affects the stability and service life of the device. M3 screws with a length of 5 mm are most often used to install an SSD in a computer. In some disk models it is necessary to use shorter screws, e.g. 2.5 mm. Before choosing specific screws, please read the user manual, and more specifically, the SSD drive installation section.