A schematic diagram for MSI hardware (board MS-14571). Shared as “MS-14571 VER 1.0_WWW.DEVICEDB.XYZ_.pdf” — a .pdf file, 1.36 MB.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @ShareMan_Electronic_Files. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.