Features: Experience control over USB powered devices with USB Infinite Speed Adjuster, essential tool for precise speed regulation. from plastic, this PWM stepless speed controller features a convenient Switches function and supports a wide Voltages of 5V 24V3A, ensuring compatibility with various USB gadgets for Voltages boosting. for enthusiasts and professional, this device to anyone in need of managing the operational speed of USB fans, cooling pad, or LED lights with ease. Enhances your workspaces or gaming by integrating this USB speed adjuster, for adjusting desk fan, laptop coolers, or LED to environment. With lengthy 113cm USB male input cord and 25cm female output, this USB Speed Adjuster offer flexibility and convenience, making it accessory for USB powered. Specifications: Materials: Plastic Long line: 113cm Short line: 25cm Package Includes: 1PC USB Stepless Speed Controller note: Please allow 0-1cm error due to manual measurement. please makes sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you.