Cisco Systems 4900M

Chapter 3 Installing the Switch

Connecting DC Power to the Catalyst 4900M Switch

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Cisco Catalyst 4900M Switch Installation Guide

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Figure 3-7 DC Power Supply

Step 4 Connect the positive and negative power cables into the power supplies using a

number 2 Phillips screwdriver.

Note The DC power cables may use AWG #10 to AWG #12 wire.

Step 5 Replace the safety cover over the power terminals.

Step 6 Connect the other end of the power cables to an DC-power input source. If both

power supplies will be used, make sure they are on different circuits.

Step 7 Turn on the power from the power source. Turn the DC supply on/off switch to

ON.

Step 8 Verify power supply operation by looking at the front panel power supply LEDs:

• The PS1 or PS2 LED is green when the power supply is functioning normally.

• The PS1 or PS2 LED is red when the power supply is not functioning

normally.

1Captive screw 5Positive terminals

2Handle 6Negative terminals

3On/off switch 7INPUT OK LED

4Ground terminal 8OUTPUT OK LED

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2 23

5 6