Bgears b-Blaster 90mm 2 Ball Bearing High Speed Extreme Airflow Fan 2 Ball Bearing fan for Extended Life and High Performance Extreme Speed with Excellent Airflow Ideal for PC CASE, POWER SUPPLY and CPU heat sink 3 pin 3 lead wire connector with Fan Speed signal output Includes 3 to 4 pin Molex adapter for direct connect to Power Supply High speed 3500RPM 2 ball bearing long lifespan Airflow upto o 78 CFM Include 3 pin to 4 pin Molex converter and 4 screws 12V DC fan