A small 244 KB RAR archive referencing an H110M C D3BR board, most likely a desktop motherboard on the Intel H110 chipset, with D3 suggesting DDR3 memory support and BR a Brazilian version. The name does not say what is inside: it could be a BIOS image, a schematic or a boardview. Extract it and identify the files before use. If a firmware dump is included, match it to the exact board model and SPI chip capacity, and read the original chip first so you can restore it.
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 @oficinacomputadores. 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.