An archive of repair files for Dell hardware (board LA-A971P). Shared as “dell E7250 LA-A971P OK TESTED UC3.rar” — a .rar file, 11.0 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 @hrtechno. 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)