Archive tied to the base ASUS P8H67-M micro-ATX motherboard with the Intel H67 chipset for socket LGA1155 CPUs. The name does not list the contents; the small 249 KB size points to a schematic, boardview or similar service data rather than a full firmware image. Extract it and identify each file before working on the board. Use it to trace rails, check for shorts on the CPU and memory supplies and locate the flash chip, and confirm the PCB revision first, since EVO, PRO and LE variants differ.
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 @boardview. 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.