ASUS F2A55-M motherboard archive in RAR format, 356 KB, naming only the model. The board is built on the AMD A55 chipset for socket FM2 APUs in a micro-ATX layout. Packs like this typically supply boardview data used to locate components, trace nets from the VRM controller and find measuring points while hunting a short. Extract and check the contents, and make sure the revision silkscreened on your board corresponds to the file before relying on positions.
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)