An archive of repair files for Dell hardware (board LA-D051P). Shared as “DELL 15-5557 LA-D051P REV 1.0 A00.rar” — a .rar file, 5.60 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 @acheibios. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.
7-ZipWinRARThe Unarchiver (macOS)