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  5. Noctua

  6. Item#: 9SIAADY5SE8250

  • $26.95
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    Noctua NA-FC1, 4-Pin PWM Fan Controller (Black)

    (20)(6) Write a Review
    • Compact, highly flexible controller for 4-pin PWM fans
    • Works as a manual speed reducer or in tandem with the automatic motherboard fan control: achieve truly quiet operation, even with high-speed PWM fans such as Noctua’s industrialPPC series
    • “No stop” mode: prevents the fan from falling below a speed of 300rpm in order to avoid BIOS fan errors
    • Includes a 3-way splitter cable for controlling up to 3 fans simultaneously
    • 6-year manufacturer’s warranty
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    Overview
    Specs
    Reviews (20)
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    The NA-FC1 is a compact, highly flexible controller for 4-pin PWM fans that can both work on its own for manual speed reduction and also work in tandem with the automatic motherboard fan control. By adjusting the NA-FC1's speed control dial, users can either manually set a PWM duty cycle from 0 to 100% or reduce the PWM duty cycle supplied by PC motherboards in order to have the fans running slower than the automatic motherboard fan control would allow. While the brightness of the orange status LED provides visual feedback on the current dial setting, the push button allows the NA-FC1 to be switched into no stop mode, which prevents the fan from falling below a speed of 300rpm. Thanks to the supplied 3-way split cable and power supply adaptor, up to 3 fans can be controlled simultaneously.

     

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    PWM based control
    While most fan controllers are voltage based, the NA-FC1 uses the more sophisticated Pulse Width Modulation (PWM) technique that allows for more efficient control and lower minimum speeds, regardless of the fan's starting voltage.  
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    Power supply adaptor
    As powering multiple higher wattage fans from a single motherboard fan header may damage the motherboard, the NA-FC1 includes an NA-AC4 adaptor that powers the device directly from the power supply unit while simultaneously receiving PWM input from the motherboard and forwarding RPM information. This makes it ideal for controlling multiple high-speed fans such as Noctua's 3000rpm industrialPPC models.  
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    3-way splitter cable
    The supplied 3-way splitter cable allows the connection of up to three 4-pin PWM fans in order to control them simultaneously. Even more fans can be controlled at once when using additional NA-YC1 splitter cables that are supplied with many Noctua fans and available as an optional accessory kit (NA-SYC1).  
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    No stop mode
    If the small push button is pressed and the green status LED is on, the NA-FC1 operates in no stop mode, which means that it will not allow the fan to fall below 300rpm, regardless of the speed setting and the input PWM duty cycle from the motherboard, thus avoiding BIOS fan errors.


     

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    Specifications:

    Connector: 4-pin

    Voltage Range: 5-12 V

    Colour: black

    Size: 21 x 25 x 48 mm

     

     

    Fan compatibility:

    all Noctua 12V PWM and 5V PWM fans, many third party PWM fans

    Scope of delivery

    • NA-FC1 controller

    • NA-SC1 3-way splitter cable

    • NA-EC1 input cable

    • NA-AC4 input cable with power supply adaptor

    *Please note that many PWM fans have a minimum speed higher than 300rpm and as the function of no stop mode is to not let fans go below 300rpm, it is only useful for fans which are generally able to go below this speed. For example, a fan with 500rpm minimum speed will act the same with no stop mode on and off.


     

    Manual control mode

    If the NA-FC1 doesn't receive an input PWM signal from the motherboard, it works as a simple manual controller that allows the duty cycle to be set from 0 to 100%. This makes it ideal for manually slowing down high-speed PWM fans such as Noctua's iPPC series to achieve consistently quiet operation.

    image for this item
    The NA-FC1 is a compact, highly flexible controller for 4-pin PWM fans that can both work on its own for manual speed reduction and also work in tandem with the automatic motherboard fan control. By adjusting the NA-FC1s speed control dial, users can either manually set a PWM duty cycle from 0 to 100% or reduce the PWM duty cycle supplied by PC motherboards in order to have the fans running slower than the automatic motherboard fan control would allow. While the brightness of the orange status LED provides visual feedback on the current dial setting, the push button allows the NA-FC1 to be switched into no stop mode, which prevents the fan from falling below a speed of 300rpm.

    Thanks to the supplied 3-way split cable and power supply adaptor, up to 3 fans can be controlled simultaneously.

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
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    The Noctua NA-FC1 is a compact controller for 4-pin PWM fans, letting PC builders manually reduce fan speed or fine-tune motherboard-controlled fans for quieter operation.

    Recommended For

    • PC builders with high-speed 4-pin PWM case fans who want to manually reduce fan speed for quieter everyday use, while keeping the option to combine the controller with motherboard PWM control.
    • DIY builders using compatible 5V PWM fans with USB power who want a physical dial for adjusting fan speed in a project or non-PC setup.
    • Users who want to adjust up to three connected PWM fans together—for example, case fans in one zone—rather than set each fan independently.
    • Users who want to keep a PWM fan from stopping at very low settings and triggering a motherboard fan warning; the controller includes a “no stop” mode for this use.

    Real-World Use Scenarios

    • When high-speed case fans stay louder than desired under the motherboard’s automatic fan curve, use the NA-FC1 to trim the PWM signal and reduce fan speed; the motherboard can still adjust the fans while the controller limits their speed.
    • When a PC’s BIOS or fan-control software offers limited adjustment, use the dial for manual PWM control; this lets you set a fan speed without relying on an automatic motherboard curve.
    • When several compatible PWM fans should run at a similar setting, connect up to three to the included splitter and adjust them together; this is useful for case fans that do not need separate speed controls.
    • When a fan slowed for quiet operation risks stopping and triggering a BIOS fan warning, enable “no stop” mode; it keeps the fan from falling below 300 rpm, though the fan’s own minimum-speed behavior still matters.
    • When using a compatible 5V PWM fan away from a PC—such as a USB-powered cooling setup—place the NA-FC1 between the USB fan adapter and the fan to adjust speed manually.