NRC-1000 This noise reduction cable is designed to be used with the PHT-3600 CPU Fan with CPUs below 3.06 Ghz. It is also great for use with other fans, assuming there is ample cooling to allow for the slight reduction in airflow. The Nexus NRC-1000 Noise/Speed Reduction cable brings the fan voltage down from 12 Volt to 10 Volt and consequentially brings the fan speed down. For example when using the NRC-1000 in combination with the Nexus SP702512M fan the fan speed goes down from 2400 RPM to approximately 1930 RPM. Consequentially a lower noise level is achieved. Nexus PHT-3600 CPU Cooler NRC-1000 Noise Reduction Cable Specifications Reduces the fan voltage from 12 Volts to 10 Volts. Consequentially reduces the fan speed and and fan noise Length: 22.5 cm Standard 3-pin connectors