ITEM NAME:140mm 4 Pin Speed Adjustable Silent PC Case Cooling Fan Desktop CPU Cooler Fan Product Description Description: 140mm 4 Pin Silent PC Case Cooling Fan Desktop CPU Cooler Fan DC 12V Speed Adjustable Feature: Fan connector: standard 4-pin connector for motherboard. Durable hydraulic bearing, more than 50,000 hours life. 4 Pin mainboard connector, supports speed measurement and speed regulation functions, very quiet. Moderate air volume with 1700 RPM! Super silent fan, can be used as a case fan or a CPU cooler fan. Recommended usage: CPU cooler fan and case cooling fan. Specification: Screw hole spacing: 10.5cm/4.13" Rated voltage: 12V Rated current: 0.24A Input power: 2.88W Speed: 1700rpm  ± 5% (speed adjustable) Maximum air volume: 60CFM Maximum static pressure: 58Pa Noise: 24dB Product size: 140 * 140 * 25mm/5.51*5.51*0.98" Note: 1. There may be slight size deviations due to manual measurement, different measuring methods and tools. 2. The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor. Included: 1 X Fan.Super silent fan, can be used as a case fan or a CPU cooler fan. Screw hole spacing: 10.5cm/4.13". The picture may not reflect the actual color of the item because of different photographing light, angle and display monitor.