An archive of repair files for Toshiba hardware (board DABY3CMB8E0). Shared as “Toshiba Portege M800 (DABY3CMB8E0-E).rar” — a .rar file, 2.54 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 @IT_SERVICE_WORLD. 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)