Gigabyte motherboard chipset driver package, version 18.50.16.01, zipped at roughly 499 MB. The name does not list the supported board models or chipset, so check the release notes or Gigabyte support page for your exact board. Large bundles like this often contain several driver components installed together. Use it after reinstalling Windows to clear unknown devices in Device Manager. It contains drivers only, not BIOS firmware, and is installed from within the running operating system.
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 @oficinacomputadores. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.