Small 884 KB zip for the MSI MS-6721 board, labelled only with the brand and MSI's internal model code. Contents are not described, so open it and identify the files by extension: PDF for schematics or manuals, BIN or ROM for a BIOS image. A firmware image should be written to the flash chip only after reading and saving the original with an SPI or parallel programmer, and only if its size equals the chip capacity. Match the board revision on the PCB to the files before use.
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.
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