Archive in RAR format, 2.07 MB, for the ASUS A8F notebook, with the SC tag in the name most likely indicating schematic contents. No board revision is stated. A laptop schematic maps power sequencing, voltage regulators, the charging circuit and signal paths, which helps when diagnosing no-power, no-boot or display faults. Extract and open the document in a PDF reader. A slightly larger copy of a similar name exists, so compare both and check the revision on the PCB against the title block.
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 @cyberlanelectonik. 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.