Firmware archive for the ASUS A450C, which the name says uses the X450CC mainboard at revision 2.3. At only 49.7 KB it is too small to be a full SPI flash image and may hold an EC firmware, a partial region or an update package, so check its contents before use. ASUS shares X450CC boards across several regional model names such as A450C. Back up the existing chip with a programmer before writing anything, and make sure the data size matches the target chip 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 →