Bearing Type: Hybrid Sleeves Bearing ( H.S.B ) RPM: 1200rpm±10% Air Flow: 51.02 CFM Max. Noise Level: 19.6 ~ 25.20 dBA Power Connector: 3 Pin with 4 Pin Power connector Color: Black Frame and BLUE Blade Dimensions: 120 x 120 x 25mm Features: Voltage Range: 12V Blade Geometry: 7 Vortex Blades Anti-acoustic low Noise level designed Driving Powerful air flow up to 51.02 CFM, operating at 1200 RPM Best Wire Management and 3 to 4 pins Adaptor included