Feature:1. Compatibility: This CPU air cooler is specially designed for 2011 motherboard of version B, not suitable for version A and version C.2. Hydraulic Bearing: This desktop CPU cooler features a 120mm fan with hydraulic bearing, providing efficient and quiet cooling for your computer.3. Efficient Heat Dissipation: With a speed of 150010% RPM and an airflow of 48CFM, this CPU cooler for 2011 motherboard ensures efficient heat dissipation, keeping your CPU cool during intensive tasks.4. Long Service Life: Copper and aluminium material and the hydraulic bearing design of this CPU cooler ensures a lifespan of up to 50,000 hours, providing reliable and durable cooling performance for your computer.5. Easy Installation: This CPU cooler is equipped with a 3pin interface, making it easy to install on your motherboard, saving your time and effort.Specification:Item Type: CPU Cooling FanMaterial: Copper, AluminiumLight Effects: Colorful LightingInterface Type: 3pinFan Size: Approx. 120 x 120 x 25mm / 4.7 x 4.7 x 1.0in ( Manual Measurement, Slight Error May Exist )Speed: 150010%Noise: 22dBVoltage: 12 VDCAir Volume: 48CFMLife: 50,000 HoursBearing Type: HydraulicApplication: Designed for 2011 Motherboard of Version B, Not Suitable for Version A and Version C.Package List:1 xCPU Cooling Fan1 x Silicone Grease