12V 4 Pin 140mm DC Quiet CPU Cooling Fan High Airflow 2300RPM Adjustable Speed Computer Cooler Silent for PC Chassis Radiating Features: 1. 140mm diameter cooling fan, compatible with most common size PC case.2. Rotating speed 2300RPM, can easily discharge hot air from inside the desktop, keep it in normal temptation, keep high efficiency operation.3. DC 12v brushless fan for smooth operation.4. Connect to motherboard with pin connector. Specifications: Rotating speed: 2300RPM adjustable Air volume (reference): 44CFMOpreating voltage: 12VNoice level (reference): 21dB ± 3dB Bearing: oil bearing Lifespan: 10000h Size: 14 × 14 × 2.5cm / 5.5x5.5 x0 .9 inch Material: ABS plastic Color: Black Quantity: 1 piece Note: Please allow 0-1cm error due to manual measurement. Please make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Cooling Fan(other accessories demo in the picture is not included!)