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3-8
Cisco Catalyst 4900M Switch Installation Guide
78 -18 35 0- 0 2
Chapte r 3 Installing the Switch
Connecting Power to the Catalyst 4900M Switch
Figure 3-4 Grounding Pad Location
Warning
The plug -sock et combinatio n must be accessible at all times bec ause it serves as the main
disconnecting devic e.
Statement 1019
Step 2 Plug the power cords into the power supplies. Refer to Figure 3-5 for the plug location.
Figure 3-5 AC-Input Power Supply
Step 3 Connect 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 4 Turn the power switches to the ON p osition.
Step 5 Verify power supply operation by lo oking 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.
1 Grounding pad
1
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1 Captive screw 4 AC power connection
2 Handle 5 INPUT OK LED
3 On/off switch 6 OUTPUT OK LED
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2 2
1
1
3
5 6
4