1.Balanced air flow and air pressure design maximizes heat reduction to keep your system cool and running smoothly. 2.Enhanced Fan Frame: Enhanced frame structure, reducing turbulent flow noise increase efficiency. 3.Wide Compatibility:The most commonly 120mm size for computer case.Compatible 3-pin connector for main-board and power supply that also works with molex 4-pin headers. 4.The 120mm fan Blade engineered for Low-Noise operation without sacrificing performance. 5.Long Service Life:Wear resistant hydraulic bearing construction makes the fan run noiseless and the air volume larger with an astounding service life of more than 40,000 hours.