Features: Designed for 12V 4-wire PWM fan/pump DC-DC booster circuit. This PWM Speed controller assist 12v traditional fan pace control, also assist laptop water cooling PWM pump head velocity adjustment. This governor is suggested to adjust the output energy within 7-8 watts (12V 0) This governor input port is USB Type-c feminine is normal PWM 4pin fan port Built-in DCDC boost circuit(boost USB 5V to 12V) pwm sign generator (make it able to regulate speed) Fan speed adjustment range 0-100% Turn the knob clockwise to extend the speed Turn the knob counterclockwise to reduce the speed Turn counterclockwise to close the output The utility state of affairs of the governor design is especially powered during the charging head/rechargeable battery, the average output prospective is usually 5V/2A, higher specifications are relatively rare, and the parameters of 12v/0 fan nearly reach 5V/2A complete strength supply, whereas taking into consideration the small length of the PWM governor so limited cooling capacity. It is recommended that the output latest be managed under zero for short time use and under zero for long time use. Here potential the current on the maximum speed, the fan current will fluctuate proportionally according to the speed. Specification: Input voltage: 5V Output voltage: 12V PWM frequency: about 25KHz Output current: rated 0/maximum zero Input port: USB TYPE-C feminine port Output: PWM 4Pin Speed range: PWM responsibility cycle 0-100% type: B-1 to two Adapter cable Material: PLA colour: Black Package Contents: 1 x PWM Governor 1 x strength supply Cable 1 x 1 to two Adapter cable Only the above kit content, diverse products should not included. Note: Light mirrored image and various displays may cause the colour of the article in the picture a little diverse from the real thing. The size allowed error is +/- 1-3cm.