Noctua NF-A14 ULN, 3-Pin Premium Quiet Fan (140mm, Brown) Award-winning 140x25mm A-series fan with Flow Acceleration Channels and Advanced Acoustic Optimization frame for superior quiet cooling performance Square frame design is ideal for water cooling radiators (AIO or DIY), PC cases and other chassis (intake & exhaust), cabinet ventilation, etc. 3-pin ULN version with 800rpm (600rpm with supplied Ultra-Low-Noise Adaptor) for serious silent enthusiasts who demand the utmost quietness of operation Includes anti-vibration mounts, fan screws, Ultra-Low-Noise Adaptor, extension cable and 3:4-pin adaptor for powering the fan directly from the power supply Trusted Noctua quality with premium-grade SSO2 bearing and more than 150.000 hours MTTF, backed up with 6-year manufacturers warranty