The dimension of the controller is 21x25x48mm. Thanks to the supplied 3-way split cable and power supply adaptor, up to 3 fans can be controlled simultaneously.” 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. 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. Here is what the Noctua is saying about these, “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. The content list is printed on the leaflet. The presentation of the product is quite effective. The foams are shipped inside a paper board packing box. The NA-FC1 is listed at $24.15 on AMAZON US and £24.11 on AMAZON UK. The controller has a speed dial to regulate the PWM duty cycle. The controller can work with the motherboard for the PWM signal as well as can work as a standalone controller. It is a slim fan controller which allows the user to control up to 3x PWM fans. We will be taking a spin on a handy accessory from the Noctua which is NA-FC1.

Pwm fan motherboard