Compressed archive of 2.20 MB for the ZX-H61C board at revision 1.2, an Intel H61 chipset desktop motherboard according to its name. It sits alongside a similarly named package of slightly different size, so compare both before choosing one. The contents are most likely a BIOS image intended for reprogramming the SPI flash with an external programmer when the board is dead or stuck. Verify the 1.2 revision printed on the PCB, dump and keep the current chip contents, and confirm the image size fits 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 @laptopchiplevelrepair. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.