RAR archive of 1.35 MB containing Rufus 4.3 in its x86 build, a Windows utility for creating bootable USB drives from ISO images. In a repair workflow it is handy for preparing DOS boot sticks for running BIOS flash utilities, or installer and live media for testing a repaired machine. The program runs without installation; extract it and launch the executable. Selecting the target drive carefully matters, since the USB stick is completely erased during the write process.
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 @generalproblemsolved. 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.