February 18, 201115 yr One of my Scythe S-FLEX SFF21E / 120mm 1,200rpm is spinning much slower than it's little buddy, purchased at the same time. I've read of users who reduce the voltage being sent to a fan to make it spin slower. It sounds like I should take a multimeter to the molex plugs on both of them to see what volts they are getting. But which wires are the ones to test? I've got both the 3 pin red, yellow, black connector, as well as the standard molex connector in use.
February 18, 201115 yr I read about this years ago. I believe you want to check the voltage on the red and the yellow, one should be 5v and the other should be 12v. Black should be ground.
February 18, 201115 yr Author I read about this years ago. I believe you want to check the voltage on the red and the yellow, one should be 5v and the other should be 12v. Black should be ground. Alright. I can compare to the other (most likely) working as it should unit.
February 18, 201115 yr FYI that is off the molex. I believe that the yellow on the fan header plug (small 3 pin) itself is just a sensor wire.
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