An archive of repair files for Acer hardware (board 12243-2). Shared as “AFS Acer E1-472 EA40-HW_12243-2 12243-2.rar” — a .rar file, 1.57 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 @afsschematicfree. 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)