An archive of repair files (board 6050A2728501). Shared as “6050A2728501-MB-A01 backup 16mb.rar” — a .rar file, 7.45 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 @anztechnology. 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)