Boardview for the Gigabyte GA-H81M-H micro-ATX desktop motherboard, packed in a 571 KB RAR archive. The H81 in the model name refers to the Intel H81 chipset. No PCB revision is stated in the name, so compare part placement with the board on your bench, as Gigabyte often releases several revisions of one model. Once extracted, the layout opens in tools such as OpenBoardView or FlexBV, letting a technician find components, identify nets, trace power rails from the VRM and locate test points while diagnosing no-power or short faults.
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 @BoardSchematic. 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.