Just as Whitepaw said supreme fx is the name they gave it but that's the cluster of hardware on the board itself and the software it runs
The driver is still a realtek audio driver but an updated one lol its not the one from the 90s that most PCs run lol
So to update you would want to see if there is a realtek update as well as a supremefx update, as I believe the support site have them separate but I can't really remember on that
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