1. Can bring 8 fans at the same time, PWM fan speed regulation 2. 4-wire fans or 3-wire fans with PWM speed control ports can be used in common use. Note the fan interface sequence is commonly used. 3. The maximum power of a single fan is within 60W, and the power is within 300W (note the power also depends on the power of the chassis power supply) 4. Multifunctional compatible to control multiple fans 5. The product is convenient and easy to operate Working voltage: DC12V Quiescent current: 0.015A (standby state) PWM duty : 0%-100% PWM frequency: 25khz Different batches of raw materials, the color of the interface and capacitor on the product are random, do not accept the designation, do not affect the use size:60x35x16mm Material:PCB+Plastic+Metal colour:green Package Contents: 1 * Fan Speed Controller Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.