High quality of this Mini 3-Pin CPU Fan Speed Controller for PC can be guaranteed! The Fan Speed Controller is suitable for PC CPU fan with 3 pins. Descriptions:High quality of this Mini 3-Pin CPU Fan Speed Controller for PC can be guaranteed!The Fan Speed Controller is suitable for PC CPU fan with 3 pins.There is a speed knob to adjust the fan speed.CPU Fan Speed Controller has no adverse effect on the CPU and syetem.Color: BlackSize: 6.1 x 2.5 x 1.8cmWeight: about 24gPackage Contents:1 x 3-Pin Fan Speed Controller