General description The 4 Pin PWM Speed Controller is designed for 12V 4-wire PWM fans and pumps, featuring a built-in DC-DC booster circuit. This regulator allows for precise speed control of standard 12V fans and computer cooling PWM pump heads, making it an essential tool for effective cooling solutions. Technical specifications Input voltage: 5V Output voltage: 12V Frequency PWM: approximately 25KHz Output current: rated 0.5A / maximum 0.7A Input port: USB Type-C Output: 4-pin PWM Speed range: PWM duty cycle 0-100% Type: A-1 to 3 Adapter Cable Material: PLA Color: Black Usage Turn the knob clockwise to increase the fan speed. Turn the knob counterclockwise to decrease the fan speed or to turn off the output. Recommended output current: below 0.7A for short-term use and below 0.5A for long-term use. Other information Package Contents: 1 x PWM Regulator, 1 x Power Cable, 1 x 1 to 3 Adapter Cable. Note: Light reflection and different displays may cause the color of the item to differ