A boardview (component placement) file (board NM-F061). Shared as “NM-F061 REV1.0.tvw.zip” — a .zip file, 2.46 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 @Satale_bios_esquemas_Laptop. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.