ACFAN00231A - Semi-Passive 120mm Fan with Digital A-RGB Enjoy complete colour control with the ACFAN00231A Semi-Passive 120mm Fan with Digital A-RGB. It includes 12 digital A-RGB LEDs that can be controlled independently and are compatible with other A-RGB standards. Keep silent operation during IDLE and maximum performance when needed with the 0dB mode. Optimised For High Static Pressure The ACFAN00231A fan is designed with a focused airflow and high static pressure to guarantee efficient cooling and is ideal to use on heatsinks, radiators and covered case vents. Its static pressure rating is 1.85 mm H20. PWM Sharing Technology Easily manage fan speed and noise with PWM Sharing Technology (PST). The ACFAN00231A fan has an extensive speed range and synchronises its speed with other fans connected, reducing noise to a minimum with just the power you need. Maximum Smoothness and Minimum Vibration The ACFAN00231A operates with a newly developed ARCTIC motor which is barely audible even at the lowest speed and incorporates rubberised contact surfaces to reduce vibrations. Its high quality plain bearing reduces heat and friction which extends service life.