USB Fan Wind Speed Controller Air Volume Regulator Cooling Noise Reduction Governor

1. 5V USB fan speed controller supports stepless speed adjustment, turn the control knob to change fan airflow from low speed to full speed easily. 2. Dual power input design with USB?A and Micro?USB port, you can power it by laptop, power bank, usb wall charger and other common 5V USB power sources. 3. Built?in USB?A output port for connecting USB cooling fan directly, power indicator light shows working status clearly. 4. Compact circuit board module, simple 3?step installation, plug and play, no complex wiring required for daily DIY projects. 5. Mainly fit for 5V USB cooling fans, suitable for computer case cooling, small DIY cooling setup, cabinet ventilation and other homemade cooling solutions. Specifications: 1. Power Supply Range: DC 4-12V 2. Output Range: DC 2.5-8.0V 3. Rated Power: 5W 4. Input Port: MicroUSB or USB male input 5. Output Port: USB female