A boardview (component placement) file for Dell hardware (board LA-K621P). Shared as “Dell Precision 7560 GDB55 LA-K621P bdv.zip” — a .zip file, 431 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 @Laptopbiossolutions. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.