An archive of repair files for Lenovo hardware. Shared as “NB6766B_MB_V3 IDEAPAD PRO 5 14IMH9.7z” — a .7z file, 15.1 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 .7z file
High-ratio compressed archive, often used for large BIOS collections.
7-ZipWinRARKeka (macOS)