LB1 High Performance New Super Cooling Fan for Asus G750JX-DB71 17.3-Inch Laptop (Black) Aluminium Cooling Fan Cooling System Cooling Pads with Single Large Fan Single Large fan provides extreme air flow. High thermal heat dissipation prevents overheating . Great ergonomic shape for simple typing. Support low noise. Slim and Smart design. Helps notebook to operate at full speed even while running high performance applications. Lightweight and compact - Perfect for portable user. Powered by 1 USB cable. Plug-and-play: no drivers or software needed. Rated Voltage: DC 5V. Speed: 750-1500 RPM. USB Port: 2. Dimensions: 13.6 x 11 x 2.5 inches.