ASUS BIOS archive for the R751L laptop, whose motherboard is identified as X750LB, packed in a RAR of 4.28 MB. ASUS often ships one mainboard under several model names, so the board name printed on the PCB is the reliable reference. The image is meant to be written to the SPI flash with an external programmer to revive a board that fails to post. Read the original chip first and keep it, and make sure the dump size equals the chip capacity; serial and MAC data may need restoring afterwards.
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 →