BIOS firmware for a CIH61S1 revision 1.0 motherboard, packed as a 3.56 MB RAR, with an SB suffix whose meaning the name does not explain. CIH61S1 is an Intel H61 based all-in-one board known from Lenovo C440 machines, though no brand is stated here. Technicians write such dumps to the SPI flash with a CH341A or similar programmer to revive a board with corrupted firmware. Read and keep the original contents before erasing, and check the image size matches the chip 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 →