The Prisma AL-18 is a powerful 180 mm ARGB fan that packs a mean punch in the airflow department. Massive blades, stout 38 mm thickness, and wide 300-1200 RPM range with PWM control allow the AL-18 to yield remarkably high airflow while remaining remarkably quiet. Main Features Massive 180 x 38 mm RGB fan that yields remarkably high airflow while remaining very quiet Twelve individually addressable hub-mounted RGB LEDs Specially designed fan blades and outer ring produce an exceptionally uniform glow LLS (Long Life Sleeve) bearings provide silent operation with a long lifespan Integrated vibration-damping corners made from high-quality synthetic rubber Trip Wire technology introduces a micro-turbulent layer for enhanced blade efficiency Aerodynamic stator struts with embedded wiring reduce noise and turbulence Chainable RGB cables simplify wiring and make the most of available connections PWM control with a wide 300-1200 RPM speed range ideal for radiators Black sleeved power cables offer an extra touch of style ASUS AURA, Gigabyte Fusion, MSI Mystic Light and ASRock Polychrome support Adjust R1 RGB controller (sold separately) enables physical control of colours and effects Fits standard 180 mm fan mounts with 165 x 165 mm screw hole pattern