ASUS ET2311I all-in-one BIOS ROM, with 1403 in the name, most likely the firmware version, packed into a 5.90 MB RAR. A ROM image like this is used to reflash the SPI chip when the unit will not post or a BIOS update failed. Extract the archive and compare the file length with the capacity of the flash chip, since an image of the wrong size will not fit. Read and keep the original contents with your programmer before writing, and confirm the model sticker matches ET2311I.
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 →