Zalman PWM Mate Fan Controller

This controller really PWNs! (Or is that PWMs?)

The World's First PWM Fan Speed Controller - The controller modulates the PWM (Pulse Width Modulation) fan speed control signal allowing user defined PWM fan speed settings.

Variety of Control Mode - The 3-Step Automatic Mode and a Manual Mode provide flexible customization of fan speed control according to the user's environment.

Convenient Controls - The Mode Switch Button, Manual Speed Dial, and Mode Indicator LEDs provide convenience and ease of use.
Environment Friendly Design - Environment friendly materials incorporated for RoHS(Restriction of Hazardous Substances) compliance.