Includes anti-vibration mounts, fan screws, Low-Noise Adaptor, extension cable and y-cable for running two PWM fans on the same header. 4-pin PWM version for automatic speed control via 4-pin PWM fan headers, broad 550-3000rpm speed range (2300rpm max. with supplied Low-Noise Adaptor). Ideal replacement for noisy or broken 12V 6cm fans in DVRs, NAS, network and storage devices, 3D printers, etc. Award-winning 60x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimisation frame for superior quiet cooling performance. Premium quiet fan, 60x60x25 mm, 12V, 4-pin PWM, max. 3000 RPM, max. 19.3 dB(A), >150,000 h MTTF.