LEGENDARY SILENCE, EPIC PERFORMANCE & FEATURES For the highest performance, optimized fan blades, especially for heat sinks designed radiator corners & a speed switch with 3 selectable speed options, Silent Wings Pro 4 120mm PWM is the most progressive, performant, & versatile fan by be quiet! AN ELEGANT LOOK The all-black design combined with a high-grade fan sticker makes Silent Wings Pro 4 120mm PWM a highlight in any system. The finely sleeved PWM cable perfectly rounds up the outer appearance of the fan. Not only does the PWM cable look great: its connector can also be plugged in & out with ease, making the fan an eye-catcher & user-friendly alike. enhanced ON ALL LEVELS The fan blades are what makes a fan. It is for this reason that the fan blades of Silent Wings Pro 4 120mm PWM have been developed newly from scratch. The new blade arrangement enables a performance second to none for all possible operations. Be it in a case, on radiators or heat sinks. MINIMUM DISTANCE FOR MAXIMUM AIR PRESSURE Silent Wings Pro 4 120mm PWM makes for extraordinary air pressure & therefor, significantly increases the system’s performance. The decreased distance between the fan blades & the frame enables an extraordinarily high air pressure. By that, the Silent Wings Pro 4 120mm PWM allows the user to run even the most demanding applications. SPEED SWITCH MODES The speed switch makes switching between medium, high-speed & ultra-high-speed of maximum RPM levels quick & easy. The Silent Wings Pro 4 120mm PWM alters its application with a simple slide to the right. Medium-speed is suitable for any operation that requires regular cooling performance. High-speed lets the fan spin faster, providing more cooling power. 6-POLE FAN MOTOR 6-pole fan motor with 3 phases for very low power consumption, less vibration & therefore quiet max. operation of 36.8d B (A). Equipped with this state-of-the-art technology the fan is virtually inaudible when operated in mid-speed. FOR ANY PURPOSE Silent Wings Pro 4 120mm PWM has 3 mounting options. The pre-installed radiator corners are specially designed for radiators on which the incomparable performance of this high-end fan completely shines. On the other h&, for chassis use, the anti-vibration mounting is the first choice as they reduce vibrations to a minimum. The plastic mountings round up the scope. FOR A SUSTAINABLE OPERATION The advanced fluid-dynamic bearing (FDB) enables a super long fan life of up to 300, 000 hours. In addition, it reduces the vibrations significantly & supports the virtually inaudible operation of Silent Wings Pro 4 120mm PWM.