: DeltaProduct Type: EFC0812DBDimensions: 80mm x 80mm x 15mmThe speed Reference: 4000 ± 10% RPMBearing Type: Ball BearingLife span: 60,000 hoursNoise reference: 28DB ± 3dBAir volume Reference: 26.17-32.97CFMRated Voltage: 12VRated voltage: 0.50AInterface Type: Motherboard 4pin interface supports PWM intelligent temperature controlSpeed monitoring: supportPackage Type: BulkScope: replace the CPU fan and chassis fan