Hi, everyone ! Yesterday I checked Gigabyte site for BIOS updates for my product (product code in the thread title) and found this: http://www.gigabyte.com/products/product-page.aspx?pid=4812#bios If you unpack the archive, you will see two ROM files in the "BIOSFILE" folder: R929XD5-4GD-B-M.ROM R929XD5-4GD-B-P.ROM The R929XD5-4GD-B-M.ROM binary file contains: The R929XD5-4GD-B-P.ROM binary file contains: If using default Gigabyte flash executable file (found in the archive), it will flash the "M" variant. So, does anyone know what is the difference between them (functionally speaking at least, heh) ? I would be glad to help with other infos on request. Thank you.