Convenient USB Fan: The USB plug can be powered by a USB adapter or popular audio-visual electronic equipment and the USB port on the back of the game console to power the fan. Three-speed: The computer fan has a multi-speed controller that can set the fan speed to the best noise and airflow level. 3 gears, low (L), mid (M) and high (H), low-gear noise is only 19.3dB. High-end: Includes CNC machined aluminum frame with modern brushed black finish. High Quality: The double ball bearing features 65,000 hours long life with normal use, 7 blades generate strong airflow to keep the cabinet cool. Intelligent temperature control system: the intelligent temperature control line can easily control the fan to stop working below 25? and start working above 35?, making energy saving smarter.