Features: Convenient three speed adjustment and integrated Switches for control. This fan speed controller supports a maximum of 5V3A, ensuring compatibility with a wide USB fan, including desk fans, laptop coolers, and 5V blowers. This gadget is a must have accessory for anyone using USB cooling solution. This USB fan speed adjuster provides tailored comfort by enhancing your device's cooling capabilities. This easy to use USB fan speed regulator ensures your electronic devices remain cool and perform at their best Specifications: Component:ABS Length:Approx.36cm or 14.17inch Note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item. Package includes: 1Pc Speed Controller Cable