A schematic diagram (board LA-H281P). Shared as “COMPAL LA-H281P R10_MB_TR_0409C PDF .rar” — a .rar file, 4.40 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 @generalbios. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.