Cisco Catalyst 9400 Series Installation Note page 27

The guide pin on the top, right-hand corner of a switching module is designed to slide into compatible slots
Tip
only. So the guide pin on a switching module will not slide in all the way if you insert it into a supervisor
module slot.
Step 9
Using your thumb and forefinger of each hand, simultaneously pivot in both ejector levers, to fully seat the module in
the backplane connector.
1 Ejector levers that must be pivoted in
Always use the ejector levers when installing or removing modules. A module that is only partially seated
Caution
in the backplane causes the system to halt or subsequently crash. Further, an improperly seated module may
also prevent the system from booting properly.
If you perform a hot swap, the console displays the message Module <n> has been inserted.. This message
Note
also appears if you are connected to the switch through a Telnet session.
Step 10 Use a screwdriver to tighten the captive installation screw on each end of the module faceplate.
Step 11
Install any necessary transceivers in the module ports.
Installation instructions along with safety warnings for the various types of transceivers can be found at the following
URL: https://www.cisco.com/en/US/products/hw/modules/ps5455/prod_installation_guides_list.html
Step 12 Attach any necessary network interface cables or other devices to the interface ports.
Step 13
Check the status of the module as follows:
a) Ensure that the STATUS LED is green (module operational).
2 Captive installation screws that must be tightened
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