XION AXP Alphawing Series 80mm, H.S.B Bearing, Retail Computer Case Cooling, AXP-GF80-WT (Black Frame and White Blade) Unique patented H.S.B Bearing Design to optimize performance Anti-acoustic low Noise level designed. MTBF &gt; 60,000 hours Driving Powerful air flow up to 25.65 CFM, operating at 2000 RPM. Best Wire Management and 3 to 4 pins Adaptor included