1,Function: The regulator can power supply to 4 fans and rotate the potentiometer to adjust the speed of up to 4 fans at the same time. 2,Speed Regulation: Expand 4 fan ports to solve the problem of insufficient motherboard ports, support fan port type: 2510 2P 3P 4P, all three fans can adjust the speed. 3,Easy To Install: Thick adhesive at the bottom for fixing, strong adhesion, easy to install inside the computer case, can fix the fan cube firmly inside the case. 4,Durable: 12V speed control quad distributor, more durable and makes the inside of the computer look cleaner and neater. 5,Warm Tips: The total current connected to the fan must not exceed the maximum current value of 7A to avoid damage to the regulator. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.