A boardview (component placement) file (board DAH98PMBAB0). Shared as “H98P DAH98PMBAB0 REV B.rar” — a .rar file, 366 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 @BoardSchematic. 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.