Compressed RAR package for the EM_IW522 board at version 3.0, roughly 5.9 MB. The file name gives no indication of the device brand or of whether the contents are a schematic, boardview or BIOS image, so check what is inside after extraction. Revision V3.0 should match the silkscreen on the mainboard, because a V2.0 board may differ in layout or firmware. When a flash dump is included, read and save the existing chip contents with a programmer before writing the replacement image.
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 @fileservicelaptop. 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.