Compressed RAR file for the H97-PRO GAMER desktop motherboard, an Intel H97 chipset board. The name gives no revision or file type, so the 301 KB archive should be inspected to see whether it holds a boardview, schematic or other service data. Material of this kind lets technicians trace VRM and standby rails, locate MOSFETs and controllers, and find test points for measurement. Extract with WinRAR or 7-Zip and compare the board revision silkscreened on the PCB with the files before trusting component locations.
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.