A schematic diagram for Acer hardware (board 12313-1). Shared as “12313-1 Acer V5-132P.pdf” — a .pdf file, 2.06 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 @dtechbios. 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.