Firmware for a QUADRO H55M-55C motherboard based on the Intel H55 chipset, labelled as a 4 MB image, which matches a 32 Mbit SPI flash chip. Check the chip marking on your board, because writing a 4 MB file to a chip of a different size will fail or leave the board unbootable. Technicians use such a dump to restore a desktop board with corrupted firmware through an SPI programmer. Save the current chip contents before erasing, and confirm that the board variant suffix matches C rather than G.
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 @afsbiosfree. 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 →