Hi , the tweak is really simply ...
On the plug 4 wire on the fan (black / red / blue / yellow) ... unplug ONLY the blue wire , and connect this on GND on miner (directely on psu or black wire on fan) and interpose a potentiometer (between black and blue wire) for adjuste speed
On the plug 4 wire on the fan (black / red / blue / yellow) ... unplug ONLY the blue wire , and connect this on GND on miner (directely on psu or black wire on fan) and interpose a potentiometer (between black and blue wire) for adjuste speed
This means... manual fan rpm control? Lol. You don't need the potentiomenter if you are fine with 100%
Interesting that the 3rd wire controls rpm as opposed to the 4th wire in the S9.