?? Made of high quality plastics with high end bearings, this cooling fan can run continuously for days at high speeds without hassle or concern. ?? Size: Approx.120x120x25 mm/4.72x4.72x1 in; Speed: 3000RPM; Noise:37dBA; Rated Voltage :12V; Rated Current: 0.45A; Airflow: 92.3 10%CFM; Power: Slowest Speed: 2W, Full Speed: 4 W; Cable length: Approx 23cm/910in; Connecter: DC 5.5X2.1mm Female. ?? A multi-speed controller makes it set the fan?s speed to optimal noise and airflow levels; lifespan: About 50,000 hrs, allows the fans to be laid flat or stand upright; The power adapter increases maximum fan speed and enables the fan to be powered through an AC outlet. ?? Applies to: Xboxs, Playtations, Rokus, TVs, receivers, mondems, routers, DVRs, computers and other audio video electronics. ?? Package Included: 2 * 120x25mm Cooling Fan; 2 * 3 to 12V Speed Controller.(?? Any questions, you can contact us and we will give you a satisfied solution!).