The PMP-500 came with a 4-pin molex connector and a 3-pin fan head connector. I would like to know if the fan head is to control the speed of the pump or if there is no way unless hooked up to a fan controller. The pump is great but at full voltage is pretty noisy.

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  1. That just looks like it's there for voltage/RPM monitoring, not actual speed control.
  2. What's the best way to control it's speed?
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