A schematic diagram. Shared as “Esquema_Schematic_CCE_MBPRNCBT44_T820_NCBT41x_18910_Luirons_Esquemas.rar” — a .rar file, 783 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 @Satale_bios_esquemas_Laptop. 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)