Zalman's flagship fan controller monitors and controls up to 3 standard 3-pin fans and 1 4-pin PWM fan, and also shows real-time display of PC uptime and overall power usage. 1. Power Load Meter: Displays Power Load between 10 ~ 999W. Readings between 1 and 9W are shown as Lo and readings above 999W are shown as Hi.2. Timer: Timer shows how long it has been running. It is reset when the computer is turned off.3. RPM Display: RPM is displayed in units of 10RPM. Values of 200RPM and below are shown as 0. Values between 201 ~ 6000RPM are supported by the display.4. Temperature Display: Displays temperatures between -9C and 99C. Temperatures below -10C are shown as Lo. The Display will blink temperatures between 80 ~ 99.9C and display Hi for temperatures above 99.9C.5. Fan Channel Display.6. Jog Wheel: The Jog Wheel is used for adjusting Fan RPM and selecting a the Fan Channels. RPM can be set from 60 to 6000RPM in units of 60RPM. Please note, if the maximum speed of the fan connected is limited to less than 6000RPM, then the fan speed can only be increased to its limit. The video below shows the main features and benefits of the ZM-MFC3http://www.youtube.com/v/6ZV9U1dECIQ|425|350||