Features: Experience speed control with our 5.5x2.1mm Female to USB Female Speed Controller, a PWM device to fine tune the performances of your USB power gadgets. This speed regulator supports from 5V to 24V and up to 3A current, ensuring compatibility with various USB fans, motors, blowers, and single color LED lights. For enthusiasts and hobbyists, this speed controller caters to those who appreciate precise control over their electronic projects and USB power devices. Transform your work or home environment by adjusting the USB fans or setting the mood with the perfect brightness of USB LED lights, all at your fingertips. Enhances your automation kit with this essential tool that promises to deliver both reliability and customization, making it a must for any modern gadget collection. Specifications: Material: Plastic Input: 5.5x2.1mm Female Output: USB Female Support: 5V-24V 3A Cable Length: Short: About. 10cm/3.94in Long: About. 26cm/10.23in Package Includes: 1pc Speed Controller note: Please allow 1-2cm errors due to manual measurement. Due to difference between different monitors, the picture may not reflect the item actual color.