Small RAR archive of roughly 400 KB for the ASUS P5GC-TVM-S desktop motherboard, apparently BIOS release 0401 dated 2007-10-22 judging by the numbers in the name. The contents are not listed, so confirm what is inside after extracting. The small size fits an ASUS BIOS file of that era, which can be flashed through the board utility or written to the flash chip with a programmer when a failed update leaves the board dead. Verify the exact model on the PCB and the chip capacity before writing, and keep a copy of the existing 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 @vinafix_bios. 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.