BIOS dump for the H61H2-CM desktop motherboard, listed in the name as CM2 with a 4 MB flash and marked as tested and working. The brand is not stated. The H61 prefix suggests an Intel H61 chipset board, commonly used in OEM desktops. A dump of this kind is programmed into the SPI chip with a CH341A or similar tool when the board fails to post. The archive is 8.56 MB, so check what it contains and confirm the image you write is exactly 4 MB, matching the chip, after backing up the original.
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 →