Near Silent 25 dB(A) Excellent airflow 46.0 CFM 3pin Motherboard connector supporting RPM monitoring Pass through 4Pin Molex connectors 4 x LED holes (LED's not supplied) Specifications: Model: D14SL-12 Air Flow: 46 CFM Fan Speed: 1000 RPM Noise Level: 25 dBA Fan Size: 140x140x25 MM Connector: 3-pin motherboard connector supporting RPM and 4-pin Molex pass through Size: 140x140x25mm