A boardview (component placement) file for Dell hardware (board 17859-1). Shared as “Dell Inspiron 5480 - 17859-1 Boardview.zip” — a .zip file, 25.7 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 @IT_SERVICE_WORLD. 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