Compressed archive tied to the Gigabyte GA-H61M-S2P, a micro-ATX desktop motherboard on the Intel H61 chipset. The file name lists only the model, so the exact contents, whether firmware, schematic or boardview, must be checked after extraction. Gigabyte prints the revision on the PCB, and it should match the documentation before you trust it. When reflashing a BIOS image with an external programmer, save the original chip contents first. The image size must also equal the flash chip capacity, or the write will fail.
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.