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PWM Speed Controller designed for 12V 4-wire PWM fan/pump. This governor input port is USB Type-C female.Output is standard PWM 4pin fan port. This governor is recommended to control the output power within 7-8 (12V 0.6A). This PWM Speed controller support 12v standard fan speed control, also support computer water cooling PWM pump head speed adjustment. Built-in DCDC boost circuit(boost USB 5V to 12V).Built-in pwm signal generator ( to adjust speed).