Archive for an ITX-GH61T motherboard, version 1.21, about 2.3 MB in RAR format. GH61 in the name suggests an Intel H61 based mini-ITX board, and the size matches a BIOS image, though the contents are not described. Such dumps are used to recover a board that fails to post after a corrupt update by writing the SPI flash with an external programmer. Check the model and version on the PCB, keep a backup of the original chip, and confirm the image fits the chip capacity.
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 @biositechyangiyer. 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.