An archive of repair files (board DA0R53MB6E0). Shared as “quanta_g6_da0r53mb6e0 _OK.rar” — a .rar file, 2.21 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)