Modified BIOS for an MSI H310M PRO-V PLUS board, with the name referencing Xeon E3 V5 support, delivered as a 6.77 MB RAR. MS1 likely points to MSI, but the name is terse, so inspect the archive contents before flashing. Mods of this kind are used to run server-class processors on consumer chipsets and usually require a programmer. Write it to the SPI chip with a tool such as a CH341A, save the original firmware first, and confirm the board model and chip size so the image fits correctly.
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 @biosarchive. 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.
Back up your own chip before writing any dump, and match the full board number and revision. Flashing guide →