A schematic diagram for HP hardware (board DAN91CMB6D0). Shared as “DAN91CMB6D0 Rev D Schematic Hp All In One 24-c005nt.rar” — a .rar file, 1010 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 @dtechbios. 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)