For the MSI MS-7523 desktop board, a 3.10 MB ZIP archive with no revision or content details in its name. Check what is inside; an archive this size often contains a PDF schematic, but it may also include a boardview or BIOS files. A schematic helps trace VRM phases, chipset supplies and the standby circuit, while a boardview points to physical part locations and test pads. MS-7xxx is the pattern MSI uses for its own motherboards, and the revision on the PCB should match the documents before you measure or replace components.
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 .zip file
Compressed archive that every operating system opens without extra software.