Designed for 12V 4-wire PWM fan/pump. Built-in DC-DC booster circuit. PWM duty cycle (0-100%). Small 4-PIN outlet. Input is TYPE-C female port, perfectly compatible with TYPE-C port charger (PD). Input voltage: 5V Output voltage: 12V PWM frequency: about 25KHz Output current: rated 0.5A/maximum 0.7A Input port: USB TYPE-C female port Output: PWM 4Pin Speed range: PWM duty cycle 0-100% Color: Black Material: plastic Package Contents: 1 x PWM Speed Controller Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.