Features:Working voltage: DC12VControl power: It can bring 8 fans at the same for time, PWM fan speed regulation, 4-wire fan or 3-wire with PWM speed control port can be used in common, note that the fan interface sequence is commonly used. The maximum power of a single fan is within 60W, and the total power is within 300W (note that the total power also depends on the power of the chassis power supply)Quiescent current: 0.015A (standby state)PWM duty cycle: 0%-PWM frequency: 25khz Specifications:Material:PCBSize: Approx.6x3.5x1.6cm/2.36x1.37x0.62inchWorking voltage: DC12VFeatures: Powerful fan controllerType: Fan Speed ControllerWM- frequency: P25khzPWM duty cycle: 0%-100%Style: terminal power supplyStyle: 25103P and 1 Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.3.This model is PWM speed regulation, and the speed regulation frequency is about 25K. PWM is the speed control signal, P is 12V positive, G is 12V negative, do not make mistakes in the wiring sequence.Thanks for your understandings. Package includes:1 Set Speed Controller