RAR archive of 526 KB for the Gigabyte GA-H81M-S motherboard, with the R10 suffix most likely meaning revision 1.0. The name does not list the contents, which could be a schematic, boardview or BIOS image for this Haswell H81 board. Extract it and identify the files first. Use drawings to trace the power rails and signal paths around a fault. With a firmware dump, read and save the original SPI chip on a programmer before flashing. Check that the board revision matches.
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 @cyberlanelectonik. 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.