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Molex to multiple 3 pin fan connections

Discussion in 'Cases, Modding & Electronics' started by lilhasselhoffer, May 11, 2011.

  1. lilhasselhoffer

    lilhasselhoffer

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    Hello all,

    I have done a little preliminary research, and cannot find a reasonably priced solution. What I would like is a small pcb that I can bolt into my case that converts a single molex connector into multiple 3 pin fan connections.

    I am in the Midwest of the USA.

    Does anyone know where I could find either a pcb with a molex input and multiple (4 or more ideally) 3 pin fan connectors? If there is no prefabbed solution, does anyone know where I can get the appropriate headers (my soldering skills aren't the best, but they are very passable)? Digikey and Mouser are quite expensive given the relatively small scale of the project.
  2. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

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  3. lilhasselhoffer

    lilhasselhoffer

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  4. >>PhoeniX<<

    >>PhoeniX<< New Member

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    lilhasselhoffer, did you get any fan speed decrease? I need something exactly like this for a small case build where i don't want 1000000 Molex connectors.
  5. sneekypeet

    sneekypeet Unpaid Babysitter Staff Member

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    I know with every controller I have ever used there is a slight drop in voltages. If I send 12.0V to my controllers, at the high end the voltage got reduced to 11.81V. It isnt a huge drop, but it may be enough to notice.
  6. lilhasselhoffer

    lilhasselhoffer

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    Like Sneekypeet said, there is some voltage drop. I would say about 0.1 volt, but the multimeter I used is absolute crap.

    In the real world, the fan speed drop is minimal, I couldn't tell that the rpms had decreased until I plugged the signal wire into one of my mobo headers and got a reading from speedfan. Even then it was a drop of about 40 rpm on a 2000 rpm fan

    I am not a fan of the LEDs that come with the parts (look at the 24.99 cost components), but disabling them in the future will require minimal effort and a soldering iron.
  7. >>PhoeniX<<

    >>PhoeniX<< New Member

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    Ok thank you, I have two 120mm fans and one 140mm fan in a small case so I really don't think it will make much of a difference. Besides my coolermaster fans usually haul in the RPM's so I think I should be fine.

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