A schematic diagram for Samsung hardware (board BA41-02317A). Shared as “NP450R5V BA41-02317A.pdf” — a .pdf file, 897 KB.
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.