An archive of repair files for Acer hardware (board LA-E892P). Shared as “Acer A515-51G LA-E892P REV 1A (1).rar” — a .rar file, 4.82 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 @one5technology. 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.