Bgears 120mm High Performance PWM Technology Fan - Translucent Blue (b-PWM 120 Blue 2ball) 2 Ball bearing for high performance with Airflow up to 110 CFM Speed range from 500 RPM to 2000 RPM mini 4 pin PWM connector with 3 pin to 4 pin Molex converter Translucent Blue Frame and Blue Blades with Blue LEDs 12V DC fan, Blue LED Speed range from 500 to 2000 RPM with Excellent Airflow of up to 110 CFM 15 translucent Blue blades design for ultimate airflow and low noise level at only 37 dBA PWM Technology with mini 4 pin 4 wire connector to connect directly to the Motherboard fan connector for ultimate fan speed monitoring thru Motherboard. 2 ball bearing designed for high speed and high performance Include a 3 to 4 pin Molex adapter for direct connection to Power Supply. . 4 Blue LED to enhance the lighting effect.