Features: This CPU cooling fan with copper base delivers efficient heat dissipation for HTPC and 1U. Features 9cm 4pin fan with intelligent temperature control for near quiet operational. Ideal for compact PC builders, industrial control engineers, and home theater enthusiasts requiring cooling solution. Perfectly integrates into ITX cases, server racks, and workstation setups supporting for 115X/1200. Engineered with reinforced metal backplate and contact for thermal in prolonged operations. Specifications: Component:Metal Size:Approx.9cm/3.54inch Bearing type: hydraulic bearing Current: 0.66 A±10% Noise: 10-27.1DBA Package Includes: 1Pc Cooling Fan note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.