LB1 High Performance New Super Cooling Fan for HP 8540w 1.6Ghz i7 Quad Core 16GB 320GB DVD WIn 7 Pro64 Laptop Workstation 5-Fan Cooling System Cooling Pad with Hyper Surface Design Remakable high performanec 5-fan design. Hyper surface design comprehensive heat no dead angle cooler system with extra quiet 5 built-in fans. 4 small fans 70mm and 1 large fan 140mm. Extremely heavy duty construction of the cooling pad to afford any weight or pressure. Power source supported easily by the Plug-and-Play USB connection as a self-power mode. Convenient and comfortable to carry - no need for any installation. Air Flow: 86 CFM. Powered by 1 USB cable. Plug-and-play: no drivers or software needed. Rated Voltage: DC 5V. Speed: 1000 RPM. USB Port: 2. Dimensions: 15 x 11 x 1 inches. 100% Customer Satisfaction. Fast Same-Day Shipping by 12:00 PM PDT. 30-Day Money Back Guarantee. 12 Months Warranty. Exclusive $100000 Product Protection Plan! Satisfies Government - School - Health care enterprise and Corporate account purchase order requirements.