Compressed BIOS package for the K451L laptop, which is an ASUS model, although the name states only the model code. No board revision, CPU variant or firmware version is given, so the contents need inspecting once the RAR is extracted. A dump like this is normally written to the SPI flash with an external programmer when a board will not post. Compare the image size with the chip capacity and check the revision silkscreened on the PCB, because K451L boards came in more than one revision.
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 @biosarchive. 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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →