Cisco Systems WSC4500XF32SFP manual 4-29, Make sure the module is fully seated. See Figure

Chapter 4 Removing and Replacing FRUs

Replacing Backplane Modules on a Catalyst 4507R or 4510R Switch

Step 9 Make sure the module is fully seated. (See Figure 4-26.)

Figure 4-26 Correct Module Seating

Good Bad

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Step 10 Push the module toward the back of the chassis and make sure it is clipped in by the levers on both sides. (See Figure 4-27.)

Figure 4-27 Securing the Module

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Step 11	Repeat Step 4 to Step 10 for the other modules you need to replace.
Step 12	If you are installing a clock module, secure the module to the backplane using the
	screws from the earlier removal.
Step 13	Replace the supervisor engines and switching modules to their previous slots.
Step 14	Restore power to the switch.

	Catalyst 4500 Series Switches Installation Guide
78-14409-08		4-29