Small RAR archive of about 383 KB for a board coded MS-N7Y1 at revision 0.1. The MS- prefix suggests MSI numbering, though the N-series code is unusual and the name does not identify the device or contents. Revision 0.1 indicates an early design issue, so values may differ from production boards. Extract with WinRAR or 7-Zip and check what is inside, likely schematic pages for tracing rails and signals and locating components. Confirm the code printed on your PCB matches before trusting any reference.
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.