Generic archive labelled only P8H61, referring to the H61-chipset desktop board family, with no variant, revision or content type stated. Because many sub-models share this prefix, extract the files and check any model strings inside before use. If the archive holds a BIOS image, back up the existing SPI chip, confirm the board model and that the size matches the flash capacity; schematic or boardview content can be used to trace rails and locate parts.
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.
7-ZipWinRARThe Unarchiver (macOS)