Archive named IPPSB-SFA, 2.04 MB in RAR format. The name looks like a motherboard model code of the style used for OEM desktop boards, but neither brand nor content type is stated, so treat the file as unidentified until opened. It probably holds a schematic, boardview or BIOS. Check the contents, compare any board code inside with the marking on your PCB, and if it is a firmware image, read the original flash with a programmer before overwriting it.
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 @schematicslaptop. 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)