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Re: smart fans



On 8/22/21 1:15 PM, Emanuel Berg wrote:

fan    front low          be quiet! Shadow Wings 2  140 mm 3-pin        [1]
        front high         be quiet! Shadow Wings 2  140 mm 4-pin
        CPU cooling tower  be quiet! Pure Wings 2    120 mm 4-pin (2)    [2]
        rear               Corsair                   120 mm 3-pin
        projector extra    fractal Silent Series R3  140 mm 3-pin        [3]

        The motherboard fan connectors are:
          CPU_FAN  - CPU cooling tower;
          CPU_OPT  - CPU colling tower;
          CHA_FAN1 - fan wire splitter - 3 wires - rear,
                                       - 2 wires - projector extra;
          CHA_FAN2 - front high;
          CHA_FAN3 - front low.
        All connectors are 4-pin. "Projector extra" is a fan
        located outside the computer.


I would disconnect the fan wire splitter, disconnect projector extra fan, and connect the Corsair fan directly to CHA_FAN1:

CPU_FAN- CPU cooling tower - be quiet! Pure Wings 2, 120 mm, 4-pin

CPU_OPT - CPU cooling tower - be quiet! Pure Wings 2, 120 mm, 4-pin

CHA_FAN1 - location? - Corsair, 120 mm 3-pin

CHA_FAN2 - front high - be quiet! Shadow Wings 2, 140 mm, 4-pin

CHA_FAN3 - front low - be quiet! Shadow Wings 2, 140 mm, 3-pin


It is unwise to power external devices from a computer motherboard. I would get a 12 VDC power adapter with suitable ampere rating for the projector extra fan.


David


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