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Cisco 3745 Fan Assembly and Bezel
The Cisco 3745 Fan Assembly, or CISCO3745FANASSY in the catalog, is a forced air cooling solution for Cisco routers. It comes pre-attached to a specialized bezel that mounts it securely in front of the router's circuit boards. The Cisco router fan sizes and placement are specific to the cooling needs of the Cisco 3745 router.

This refurbished CISCO3745FANASSY operates by connecting to the power supply of the 3745. This board supplies a variable voltage to the fans. This allows their speeds to be adjusted based upon component temperatures. If a component, such as the system on chip microprocessor, is running hot, the fan speeds can be increased. When the temperature of the components is lower, the speed can be reduced. This cuts down on power consumption and noise generation.

The Cisco 3745 router fan included in the CISCO3745FANASSY provides feedback to the main router circuit board. This allows a tachometer sensor to indicate the speed at which each fan is physically spinning. In addition to allowing for more fine control of the fan speed, this also allows fan failure to be detected. If a Cisco router fan is slowing down due to motor wear, a dip in power availability or a physical obstruction an alarm can be sounded to the onboard microprocessor. The operating system software can inform system administrators to hardware faults and even automatically shut down the system to prevent damage.

It is important to always provide adequate cooling to high end router hardware such as the Cisco 3745 family. When under a heavy load, these machines can experience reduced performance or outright failure in the event of an overheating condition. Because of the CISCO3745FANASSY's reporting capabilities, you can rest assured that the router is operating within expected tolerances at all times. It is not advised to use nonstandard Cisco 3745 router fans.

  • MainSpecs
    • Cisco fan unit
    • Cisco 3745
    • Fan unit
  • General
    • Fan unit
  • Compatibility Information
    • Cisco 3745


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