RAR archive labelled only WS07, with no brand, model or document type stated in the name, so its exact purpose is unclear until unpacked. The 5.70 MB size could fit a schematic, a boardview set or firmware images. Extract it and check each file before use: read schematic title blocks for the board number, or inspect firmware headers and sizes. Any firmware should only be flashed after confirming the target board and saving a backup of the original chip contents.
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 @vinafix_bios. 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)