An archive of repair files for Lenovo hardware (board NM-C871). Shared as “NM-C871 N18P-G61-MP2-A1.zip” — a .zip file, 353 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 .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip