ZIP archive of about 375 KB named Esys, which appears to refer to a brand or board family rather than a specific model; no board number, chipset or revision is stated. Because the name is uninformative, extract it and inspect the contents before use. The small size suggests a BIOS image or similar firmware. If using it for SPI flash recovery, read and save the original chip with a programmer. Also check that the image size equals the chip capacity and that the board identification matches the file.
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.