RAR archive named ZA5, about 1.03 MB, with no brand, model or file type stated. ZA5 resembles a short project code of the kind some ODMs use, but the specific laptop cannot be determined from the name alone. The size suits a boardview or a firmware package. Unpack it with an archive tool, see what it holds, and compare any board number inside with the marking on your mainboard. If firmware is included, back up the original chip before flashing.
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 @ITHINKHS. 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)