Archive of Intel Flash Image Tool (FIT) version 16.0.15.1531, part of the Intel CSME system tools, about 29 MB. The name does not refer to any laptop or board. FIT is used to open a full SPI dump, rebuild or replace the Management Engine region and configure descriptor settings, a common step when cleaning ME on a used BIOS image. The tool version should match the ME firmware generation of the target platform, and the original chip should be backed up before writing any rebuilt image.
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 @mfittool. Enginerys does not host this file.
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.