Archive for the Intel DH61WW H61 chipset desktop motherboard, marked OK tested, meaning the contents were reportedly confirmed working on a real board. The RAR is 2.18 MB and probably holds a BIOS dump for the SPI flash. It is used for repairing boards that will not POST, loop on startup or have a damaged ME region. Write it with a CH341A or similar programmer, after reading and saving the original chip, and make sure the image size matches the chip installed on your board.
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 @hrtechno. 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.