ZIP archive of 4.83 MB for the MSI MS-7502 board. The name says nothing about revision, chipset or content type, so unpack it and review what it holds. MS-7xxx is MSI's internal board numbering, used mainly on desktop motherboards. Diagrams like these help with checking power rails, reset and power-good signals and component values, while a BIOS image can restore a corrupted flash chip. Match the PCB revision, dump the original chip and check that the image size fits before writing.
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.