Product name: PWM fan extension cable black sleeve Connector type: 4-pin (3-pin/4-pin fan) Function: Help protect your computer from overheating. The cable is a 4-pin female connector and a 4-pin male connector. Connector, suitable for CPU and PC housing 4-pin/3-pin Colour: black Material: nylon Size: 30cm Package Contents: 50x fan cable 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.