Blacknoise Noiseblocker NB-BlackSilentFan XM-2 40mm 3800RPM Silent Classic Design Fan Quiet, reliable and affordable. One of the favorites in the range of ultra-silent classic design fans, the BlackSilentFan series is the perfect choice for customers looking for an affordable yet high-quality fan. High-quality components in combination with an intelligent setup result in a unique value for money ratio. The NB-BlackSilentFan-series achieves better results in almost all respects in comparison to standard fans. The advantages are a very quiet and reliable fan with trendy design and remarkable workmanship. Key Features Silent NB-NanoSLI bearing Silent NB-EKA P1 Drive Bayer Makrolon rotor Reinforced fibreglass PBT-frame 50 cm cable with high-quality textile sheath