Bearing Type: Ever Lubricate RPM: 2200 ±10% RPM Air Flow: 42 CFM Noise Level: Power Connector: 4 Pin Compatibility: PCI Slot Dimensions: 100 x 90 x 22mm Features: Exhaust the harmful hot air from inside the case High air flow, high static pressure Special design blades structure heat dissipation 5 times than other competitors Easy installation, take up only one PIC or ISA slot