Firmware archive for Lenovo ThinkCentre M720X and M920X desktops, with the board code IQ3X0IL given in the name. The 10.1 MB rar likely holds a BIOS image for the SPI flash, though the name lists no version or chip. Technicians use such dumps to bring back a machine that will not post after a failed update or a corrupted region. Compare the board code printed on the PCB with IQ3X0IL, back up the existing flash contents with a programmer, and make sure the image size matches the chip before writing anything to it.
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 →