StarTech.com 80x25mm Aluminum Quiet Ball Bearing Computer Case Fan with TX3 Connector FAN8X25TX3AL (Silver) Attractive polished aluminum frame improves heat dissipation Ultra quiet operation for minimal system noise Dual Ball Bearings in the cooling fan provides increased airflow, reliability and longer life Built-in speed sensor allows the system to monitor fan speed and operating status Polished aluminum frame Dual ball bearing motor High efficiency fan-blade design capable of moving 26 CFM Speed sensor output to the motherboard