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.
Interesting that the 3rd wire controls rpm as opposed to the 4th wire in the S9.
Nope 100% is just about the most worthless fan speed possible for the gear if you are running it at balanced speeds.
(25% would also be bad as it over heats.)
Fan wear out too fast.
Fan uses more power.
Pretty freaking annoyed at what they did.
If I drop the miners power use a few hundred watts by going to balanced I simply dont need 100% as a fan setting.
And if I do need the fans to run at 100% when on balanced using 300 watts less then factory and 500 watts less then on turbo. It means the gear will over heat on turbo.