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Cisco Catalyst 4900M Switch Installation Guide
78-18350-02
Chapter 3 Installing the Switch
Connecting Power to the Catalyst 4900M Switch
Figure 3-4Grounding Pad Location
Warning
The plug-socket combination must be accessible at all times because it serves as the main
disconnecting device.
Statement 1019
Step 2Plug the power cords into the power supplies. Refer to Figure 3-5 for the plug location.
Figure 3-5AC-Input Power Supply
Step 3Connect the other end of the power cords to an AC power source. If both power supplies will be used,
make sure they are on different source AC circuits.
Step 4Turn the power switches to the ON position.
Step 5Verify power supply operation by looking at the power supply LEDs:
•The INPUT OK LED is lit green when the source AC voltage is within operating limits.
•The OUTPUT OK LED is lit green when the measured DC output from the power supply is within
operating limits.
1Grounding pad
1
232131
1Captive screw 4AC power connection
2Handle 5INPUT OK LED
3On/off switch 6OUTPUT OK LED
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2 2
11
3
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4