Utility named F3 Tool, claimed to work on all Windows versions, distributed as a 638 KB ZIP. The name does not explain its function, so its exact purpose and supported hardware should be checked from any included readme before use. Service tools of this kind are often used for firmware or configuration tasks during repairs. Run unknown executables in an isolated environment and scan them first, and do not apply them to a customer machine until you understand what they modify.
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 @bios_main_ec_kbc. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip