An archive of repair files for MSI hardware (board MS-159K1). Shared as “Prestige A16 AI+ A3HM MS-159K1.rar” — a .rar file, 42.4 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 @boardsscanrepo. 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)