RAR file of about 704 KB labelled MS-9620, without any model name, brand or revision in the name. Its contents are not described, so extract it to find out whether it is a schematic, a boardview or something else. Numbers in this MS-format are commonly used as MSI board identifiers, but which product it is cannot be told from the name. Compare the code and any revision printed on the PCB with what you find inside. Typical uses include following power circuitry, checking components and locating test points.
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 @IT_SERVICE_WORLD. 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.