A boardview (component placement) file (board LA-C791P). Shared as “Compal AAJA0 LA-C791P Rev 1.0(A00) BoardView(brd).rar” — a .rar file, 12.8 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 @IT_SERVICE_WORLD. 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.
7-ZipWinRARThe Unarchiver (macOS)