The NF-A12x25 5V PWM is a PWM-capable 5V variant of Noctua's award-winning, high-quality 120mm NF-A12x25 fan. Equipped with an AAO (Advanced Acoustic Optimisation) standard frame and sophisticated aerodynamic design measures such as Flow Acceleration Channels, the NF-A12x25 is known for its outstanding performance and excellent running smoothness. The Smooth Commutation Drive technology and Noctua's reference class SSO2 bearings guarantee outstanding quietness and excellent long-term stability.