1.Ultra-quiet USB fans designed to cool various electronics and components. 2.Features a 3-speed controller to set the fan’s speed to optimal noise and airflow levels. 3.Perfect for Receiver, DVR, Router, Modem, Xbox, Playstation, and other Audio Video electronics , you can use it in any place with USB power supply. 4.High quality dual ball bearing have a lifespan of 70,000 hours. Light & compact design perfect for narrow place, and its square design allows the fans to be laid flat or stand upright. 5.Black metal grill on both sides, protect your hands and cables when the usb fan working; Cable protective glue in the corner, wear-resistant and not easy to break. upHere U804
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