LB1 High Performance New Super Cooling Fan for Microsoft Surface Pro 3 Core i5 3-Fan Cooling System Cooling Pad with 5-Level Adjustable Screen Height Slim design comprehensive heat no dead angle cooler system with extra quiet 3 built-in fans. Remakable high performanec 3-fan design. 5 Levels height adjustable for better viewing angle. 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. Powered by 1 USB cable | Plug-and-play: no drivers or software needed | Rated Voltage: DC 5V | Speed: 700 - 1400 RPM | USB Port: 2 | Dimensions: 14 x 10 x 1.8 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.