Compressed RAR package for the ASUS Sabertooth Z77 desktop board, 567 KB. The name only gives the model, so the exact contents need checking after extraction, though the size fits boardview or similar diagnostic data better than a BIOS dump. Open boardview files in tools such as OpenBoardView or FlexBV to locate parts, nets and measurement points. The Z77 chipset places the board in the Intel LGA1155 generation. Verify the PCB revision matches before relying on the data.
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.