An archive of repair files for Lenovo hardware (board NM-D563). Shared as “rtx3080 GA104 gn20-e8 @nm-d563.rar” — a .rar file, 426 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 @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)