Features:
USB fan regulator.
Strong and weak winds can be adjusted at will!
Fan speed regulation principle: The adjustable USB fan is a 5-volt fan motor, while the two speed fan has an internal circuit board. When placed in the second speed, the board raises the USB 5V and then connects to the motor, resulting in a !
This stepless governor smoothly varies between 2.5V and 8.0V, and the can be set arbitrarily! And the is wider! Turning the knob clockwise can increase the , while turning it counterclockwise can reduce the , and the knob has a function!
Suitable for the very common 5.0V USB fan on the market.
Insert the male head of into the phone , power , computer USB, fan plug, and then plug into head of ! Alternatively, use USB 5.0V power supply.

Specifications:
Power supply : 4-12V
Output : 2.5~8.0V
5W

Note:
No retail package.
Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!

Package includes:
1 USB Fan Stepless Governor