NUEVO Ventilador de refrigeración PWM silencioso de bajo perfil de 3/4 pines para CPU de escritorio Intel Core i3/i5/i7
4pin PWM Power Connector. has a height clearance of only 26.95mm to fit in mini ITX & 1U cases. Set your BIOS to silent mode will enable the fan to start spinning at around 1000 RPM when it would be amazingly quiet.