USB cables for cooler fan

RFQ Details

1.As attach - Adjustable voltage of the variable resistor and transistor with simple circuit, regulation voltage 3.0-5.0V 2. Total length of cable 75CM 3. Terminal is the USB (female) and extends USB male (e.g. chart) 4. Another end is DC POWER JACK 2.5 5. It's available of NB cooler to this product, adjusts the ventilator fan rotational speed But the other line connect DC JACK 2.5. (plug) not fan Need FOB price as 500, 1000, 3,000PCS