Protechnic MGT5005HR-W15 50MM Fan Dimensions: 50x50x15 MM Voltage: DC 5V, Current: 0.33A, Input Power: 1.65W Speed: 6000 RPM, Air Flow: 15.68 CFM PWM Control, Speed Sensor (Tach Output) IT IS DC 5V 4-PIN 4-WIRE 50MM FAN