Working voltage: DC12V Control : 8 fans can be used at the time, PWM fan speed control, 4-wire fan or 3-wire fan with PWM speed control port can be used in common. Note the fan interface sequence is commonly used. The maximum of a single fan is within 60W, and the is within 300W (note the depends on the supply of the chassis) Quiescent current: 0.015A (standby state) PWM duty cycle: 0%-100% PWM frequency: 25khz The raw material batches are different, the interface on the product, the color of the capacitor is random, 't accept the specified color, does not affect the . Colour: green Material: PCB + plastic + metal Size: 60MMx35MMx16MM Package Contents: 3 * Miner Fan Speed Controller Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.