Cooler Master 50mm x 50mm x 20mm Fan 3-Pin 12V 6000RPM High Speed 50x50x20mn 3-wire 3-Pin Fan 12VDC, 6000 RPM, 3-WIRE 3-PIN Tech Output Sensor Moves a lot of air, 18 CFM air flow. 3-Wire with Computer Connector (- / + / RPM)