BIOS and EC firmware set for the ASUS X441NC laptop, with 2.1 and 2.2 in the name, most likely board revisions covered by the pack. The RAR is 16.2 MB, large enough for full SPI images and a separate embedded controller file. The EC chip handles power, charging and keyboard functions, so a bad EC image can cause no-power faults even when the BIOS is fine. Match the revision on the PCB to the right file, read and save both original chips with a programmer first, and check sizes before writing.
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 →