A boardview (component placement) file (board DAG7HAMB8F0). Shared as “DAG7HAMB8F0 REV F PDF AND CAD.rar” — a .rar file, 8.47 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 .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)