StarTech.com 60x25mm High Air Flow Dual Ball Bearing Computer Case Fan w/ TX3 - 60mm 5000rpm. Two bearings for highest performance, longest life. 3PIN power connector. This fan lets you add additional chassis cooling with a high airflow rate. 3-pin connector has a built in tachometer. This 6cm x 2.5cm (5000 RPM) helps prevent computer systems from overheating, thereby increasing efficiency and stability. The fan features a built-in sensor that sends signals to your motherboard for a high-performance solution that can help avoid overheating & system failure. Ensures reliability, longer life, and allows for easy monitoring of the performance.