An archive of repair files for Lenovo hardware (board NM-D011). Shared as “NM-D011 UMA Rev1.0.rar” — a .rar file, 27.0 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.