Both cables are fully sleeved and a 4-pin y-cable allows the connection of a second fan to the same PWM fan header for automatic control. This item ARCTIC Freezer 34 eSports DUO - Tower CPU Cooler with BioniX P-Series case fan in push-pull, 120 mm PWM fan, for Intel and AMD socket - White. 120mm – up to 1,500 RPM and 41.8 CFM of airflow 140mm – up to 1,250 RPM and 50.2 CFM of airflow Plastic feels very strong and quality. Decided to add 2 intake 140mm fans Noctua fans to my Fractal Meshify C. Like the S12A, these are super quiet. Complete PWM Control: Dynamically control fan speed from 600 RPM to 1,500 RPM to minimize noise or maximize airflow. The CORSAIR LL120 RGB LED 120mm PWM White Smart Fan boasts 16 individually addressable RGB LEDs spread across two separate light loops in a striking white housing, creating vibrant lighting and visual effects. The speed of the motor, i.e. Pulse width modulation (PWM), or pulse-duration modulation (PDM), is a method of reducing the average power delivered by an electrical signal, by effectively chopping it up into discrete parts.The average value of voltage (and current) fed to the load is controlled by turning the switch between supply and load on and off at a fast rate. * Product prices and availability are accurate as of the date/time indicated and are subject to change. Use the duty cycles of a PWM circuit to help determine resistance and capacitance values. The longer the switch is on compared to the … Pinout of Dell 5pin Fan connector to stadanrd 4 pinThis is to fit a standard 4pin fan to a dell motherboard 5pin CPU (speed controlled) fan connector (essentially, you just swap pins 1 & 3 on the standard connector) The PWM duty cycle refers to the “on” state versus the “off” state. Powerful fan speeds combined with PWM control ensures that the fans cool quickly and efficiently when needed but stay quiet under low loads. The 4-pin PWM version supports fully automatic speed control via PWM fan headers and comes with a Low-Noise Adaptor to reduce the maximum speed from 2000 to 1700rpm. The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Both cables are fully sleeved and a 4-pin y-cable allows the connection of a second fan to the same PWM fan header for automatic control. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product. the fan or pump, is determined by the width of the PWM signal – the length of the time it is powered on. The fan's short 20cm primary cable minimises cable clutter in typical applications while the supplied 30cm extension provides extended reach when necessary. Driving a cooling fan motor with PWM causes the motor to respond to the average of the pulses. Created for Quiet: 120mm Fan blade engineered for low-noise operation without sacrificing performance. If we see high pulses for 50% of the time, we have a 50% duty cycle.