Fan Mod amplifies each level of the PS4 PRO PS5 Standard fan, it will not overclock the fan but amp it up slightly without stressing the fan. The PWN is exactly the same just each level is amped.  Created with the help of an Aerospace and Defense Engineer in the US.  Automatic, Plug and Play.

First stage will be 33% instead of the 15% norm. Second stage 66% (very rare if it kicks into this stage then you have the ps5 in an enclosed location and you should reconsider moving it elsewhere) 3rd stage kicks in at 90% (might have to have the unit checked to be reballed or removed from enclosed area).

Usually the first stage is enough, it will be louder than usual but you will at least save your console.