Installing the Fan-Speed Controller

This procedure describes how to install the fan-speed controller in the router:

Step 1 Unplug the fan connectors from the power supply connectors. (See Figure 3.)

Figure 3 Disconnecting the Fans from the Power Supply

Fan/power supply	Power supply
connectors

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Second fan not shown

Step 2 Remove the two screws, located near the power supply, from the motherboard. (See Figure 4.) Save these screws for later reinstallation.

8Installing a Fan-Speed Controller in Cisco 3620 Routers