An 11.4 MB ZIP archive holding a utility called ECFinder, version 0.7.0, according to the file name. The name does not explain the tool's function, so its exact purpose should be confirmed from documentation inside the archive. It is not a schematic, boardview or BIOS dump for any specific board. Before running any small third-party utility on a repair bench machine, scan it for malware, check for a readme or changelog, and keep it away from systems used to program client firmware.
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 @fixtronix_support_community. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.