be quiet! Silent Wings Pro 4 140mm PWM High Speed - Fan Management Sim and updated control schemes

and updated control schemes

Red LED Backlighting

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be quiet! Silent Wings Pro 4 140mm PWM High Speed - Fan Management Sim and updated control schemesSILENT WINGS PRO 4 140mm PWM LEGENDARY SILENCE, EPIC PERFORMANCE AND FEATURES Silent Wings Pro 4 140mm PWM is the most progressive, performant and versatile fan by be quiet! Optimized fan blades for the highest performance on radiators and heat sinks Speed switch allows changing maximum PWM speed between medium speed, high speed and ultra high speed (up to 2400 rpm) Small tip clearance and a fan frame with a funnel shaped air outlet for extremely high