BIOS firmware for the ASUS X403FA laptop, mainboard revision 2.1, compressed in a 6.70 MB RAR archive. The name gives nothing beyond model and revision, so inspect the extracted image to see whether it is a full SPI dump. Technicians use files like this to reprogram the BIOS flash with an external programmer when the notebook stays dead after a failed update or ME corruption. Make a backup of the chip before writing, check the PCB revision reads 2.1, and verify that the image size matches the flash capacity.
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 →