An archive of repair files for Lenovo hardware (board NM-D481). Shared as “Lenovo E15 Gen3 NM-D481.rar” — a .rar file, 16.1 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.