BIOS firmware for a Lenovo desktop mainboard identified as IH110CX, revision 1.0, where H110 indicates the Intel chipset family. The 5.6 MB RAR is intended for recovering a board with corrupted BIOS by writing the SPI flash with an external programmer. Lenovo desktop boards often store the machine serial and model data in this chip, so read and save the original before erasing. Confirm the board name and revision printed on the PCB and ensure the dump size matches the chip.
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 →