Constructed from aluminum, this controller operates within DC4~12V input Voltages and provide adjustable 2.5~7.5V output for fan Controls. for enthusiasts and professional who require effective cooling solution for their laptops, desktops, or mobile cooling. Achieve with USB Fan Speed Controller, featuring stepless speed regulation to customize your cooling. Enhances your office or home environment by easily managing your USB fan airflows, ensuring comfort during work, relaxation, or while using electronic devices. This speed regulator is accessory that complements any USB powered fan, offerings integration to maintain device temperature.