Very small RAR archive, only 2.40 KB, for board 09513-SB. No brand, model or numbering scheme was confirmed, though the SB suffix resembles Wistron-style project naming. At this size it cannot hold a schematic or full boardview; it may be a text note, a fragment or an incomplete upload, and a larger copy of 47.9 KB exists under the same number. Extract and inspect it before relying on anything, and match the PCB marking against 09513-SB.
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.
7-ZipWinRARThe Unarchiver (macOS)