Enhance your cooling system with this high-performance USB Fan Speed Controller, designed for precise and stepless speed regulation to optimize heat dissipation. Crafted with a premium printed circuit board, this durable fan speed control module offers smooth voltage adjustment from 2.5V to 8V, allowing you to customize airflow effortlessly for maximum comfort and efficiency. Key Features: · Stepless Speed Regulation: Provides smooth and continuous adjustment of fan speed within the output voltage range of 2.5V to 8V, enabling precise control over airflow intensity. · Easy-to-Use Knob with Switch Function: The integrated knob allows you to increase airflow by turning clockwise or reduce it by turning anticlockwise, while also serving as an on/off switch for convenient operation. · Wide Power Supply Compatibility: Supports a DC power supply range from 4V to 12V, making it compatible with various USB-powered fans and devices. · Durable Printed Circuit Board: Built with high-quality PCB material to ensure long-lasting performance and reliability during extended use. · Compact and Simple Installation: Designed for quick and hassle-free setup, allowing you to integrate the speed controller into your cooling system with ease. · Rated Power: 5W, suitable for controlling small to medium-sized USB fans effectively. Specifications: · Item Type: USB Fan Speed Controller · Product Material: Printed Circuit Board (PCB) · Power Supply Range: DC 4~12V · Output Voltage Range: DC 2.5~8.0V · Rated Power: 5W Package Includes: · 1 x USB Fan Speed Controller This USB Fan Speed Controller is an essential accessory for anyone looking to optimize fan performance and noise levels. Its smooth, stepless speed adjustment and durable construction make it ideal for enhancing cooling efficiency in computers, electronic devices, and other USB-powered equipment.