The Arctic P12 PWM PST 120mm fan generates an airflow of 56 CFM at 1,800 rpm and a static pressure of 2.2 mm H2O . Connection is via 4-pin PWM connector. Also, this version of the P12 supports PWM sharing technology (PST) so that the fan speed of the P12 PWM PST can be synchronized with other fans. Arctic installs a high quality hydrodynamic plain bearing. This not only guarantees quiet operation, but also ensures that the volume does not increase over time. With a huge warranty period of ten years this shows the quality and reliability of the fan. Technical details:- Dimensions: 120 x 120 x 25 mm- Weight: 145 g- Material: Plastic- Volume: 0.3 sone / 23.5 dB (A)- Speed: 200 - 1,800 rpm- Static pressure: 2.2 mm H20- Airflow: 56 CFM / 95.65 m / h- Voltage: 12V- Connection: 4-pin PWM PST- Warranty: 10 years