Arctic P12 Pro Reverse A-RGB PWM Fan with Cable Splitter Reversed Airflow Special design that draws in air from the back side. Ideal for glass fronted designs and PC builds where conventional fans would spoil the appearance High Static Pressure Efficient even with resistance – the generated airflow easily penetrates dense radiators, narrow perforated panels and mesh structures and ensures reliable cooling Pwm Control With Wide Speed Range The speed can be progressively adjusted up to 3000 rpm via the 4-pin PWM connection – the fan stops completely at less than 5% PWM Arctic P12 Pro Reverse A-RGB PWM Fan Reversed Airflow The P12 Pro Reverse is specifically designed for air intake from the back side. It's particularly suitable when conventional fans would compromise the aesthetics Optimized Airflow Design The trumpet-shaped intake and teardrop-shaped spokes direct the airflow with reduced flow losses. This reduces air resistance, minimising turbulence and aerodynamic noise