TAODAN USB 5V to 12V 4 Pin Fan Adapter Controller PC Cooling Fan Maximum Output 8W Electronics Computers Accessories Internal Components

["Material: 24AWG tinned copper wire, tinned copper offers excellent corrosion resistance and oxidation resistance.","Simple to use: Simply plug the USB into an adapter or computer, connect the 4-pin end to the fan, then switch it on and use the knob to adjust the speed.","Input: USB 5V, output: DC 5-12V, maximum output: 8W, suitable for low-power 12V fan speed control.","Compatible fans: 4-pin 12V fans with a power rating of less than 8W (this is a 4-pin connector, but you will notice that only two wires are connected. The other two pins are left empty, as USB power supply requires only two wires)","Package includes: 1 piece USB 5V to 12V 4-pin fan adapter controller"]