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, & 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 & 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 & turbulence Chainable RGB cables simplify wiring & 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 & ASRock Polychrome support Adjust R1 RGB controller (sold separately) enables physical control of colours & effects Fits standard 180 mm fan mounts with 165 x 165 mm screw hole pattern