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

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.
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 fans starting voltage.
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 Noctuas 3000rpm industrialPPC models.
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).
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.
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.

Specifications: Connector:
4-pin
Voltage Range:
5-12 V
Colour:
black
Size:
21 x 25 x 48 mm
all Noctua 12V PWM and 5V PWM fans, many third party PWM fans
Manual control mode If the NA-FC1 doesnt 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 Noctuas iPPC series to achieve consistently quiet operation.