RAIJINTEK EOS 9 RBW ADD series, 9225 PWM fan, the continues company's innovative design and providing advanced features & additional value to end users. With RJK ARGB-PWM CONTROL SET (optionial), you can adjust your EOS 9 RBW ADD fans to shine with rather fading, breathing, blinking and / or single color LED modes. The EOS 9 series combines optimized seven fan blade design to provide high-volume air torque, with less noise and turbulences and a Hydraulic Bearing with Low-Noise Design. With the standard 5 V ARGB LED’s incorporated and the great fan blades - the EOS 9 series is not only ensuring your case to be the center of attraction and a spot light of your system, but it’s optimized fan blade and housing design also provide outstanding air flow and cooling performance for your PC’s motherboard and CPU.