BIOS images for the P8B75-M and P8B75-M CSM desktop motherboards, packed as a 3.13 MB RAR; these model names belong to the ASUS B75 chipset range, but no version is stated. The two variants may use different files, so pick the correct one for your board. Technicians use these dumps to recover boards that fail to POST, programming the SPI flash chip directly. Check the exact model printed on the PCB, back up the current chip contents first, and confirm 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 →