This question has sort of been asked a number of times, but I can't see any thread that gives me the answer I need.
I just bought an ASUS H81M Plus mobo. It has one 4 pin CPU fan connector, and one 4 pin chassis fan connector. The pins on the chassis connector are: gnd, cha fan pwr, cha fan in, and vcc. I want to connect three BeQuiet 80mm low speed fans to the chassis connector. They have three pin plugs. Assuming that there is sufficient power to drive three fans, how would I connect them? Specifically I am interested in knowing whether only one of the fans' speed sensing wires should be hooked up. If all three speed sensing wires are hooked up, the speed reading would be meaningless as each of the three fans will run at slightly different speeds and in and out of phase with each other. Is the solution to wire the three fans in parallel but to connect the speed sending wire from only one of the fans? If so, which of the three wires on the fan and which of the four pins on the motherboard chassis fan connector is the speed sensor, and what are the other two / three - bearing in mind of course that my fans are three wire fans, not four wire PWM fans.
I just bought an ASUS H81M Plus mobo. It has one 4 pin CPU fan connector, and one 4 pin chassis fan connector. The pins on the chassis connector are: gnd, cha fan pwr, cha fan in, and vcc. I want to connect three BeQuiet 80mm low speed fans to the chassis connector. They have three pin plugs. Assuming that there is sufficient power to drive three fans, how would I connect them? Specifically I am interested in knowing whether only one of the fans' speed sensing wires should be hooked up. If all three speed sensing wires are hooked up, the speed reading would be meaningless as each of the three fans will run at slightly different speeds and in and out of phase with each other. Is the solution to wire the three fans in parallel but to connect the speed sending wire from only one of the fans? If so, which of the three wires on the fan and which of the four pins on the motherboard chassis fan connector is the speed sensor, and what are the other two / three - bearing in mind of course that my fans are three wire fans, not four wire PWM fans.
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