taodan usb 5v 12v 4 pin fan adapter controller pc cooling fan | Shop The World
From USA
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TAODAN USB 5V to 12V 4 Pin Fan Adapter Controller PC Cooling Fan Maximum Output 8W Electronics Computers Accessories Internal Components
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Products from the USA may come with an input voltage of 110V–120V, requiring a step-down transformer. Check the device wattage to select the correct power converter.
•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