LB1 High Performance New HP DV7-7227CL 17.3" Notebook with 8GB Memory 750GB Hard Drive and Windows 8 Super Cooling Fan Cooling System Cooling Pads Portable with Single Large Fan (Black)-18 Months Warranty Large Single fan provides more air flow. Stylish-Slim-Durable-Lightweight and compact. Foldable to compact size - Perfect for portable user. High thermal heat dissipation prevents overheating . Great ergonomic shape for simple typing. Support low noise. Helps notebook to operate at full speed even while running high performance applications. Powered by 1 USB cable. Plug-and-play: no drivers or software needed. Rated Voltage: DC 5V. Speed: 1700 RPM. USB Port: 2. Fan Dimensions: 2.75 x 2.75 x 0.5 inches.