Related Documentation - Cisco Catalyst 9400 Series Installation Note

b) When the switch is online, enter the show module command. Verify that the system acknowledges the new module
and that the module status is good.
Step 14 If the module is not operational, try reseating it in the slot. If the module is still not operational, contact your customer
representative.
What to do next
To ensure the proper air flow and to maintain EMI protection, make sure that there is a blank module filler plate (C9400-S-BLANK)
installed in any unused chassis slot. If a chassis slots are left open, air circulation is disrupted and the fans may not be able to adequately
cool the other modules in the chassis.

Related Documentation

For related installation and configuration information, refer to the following:
Release and General Information
Release Notes: https://www.cisco.com/c/en/us/support/switches/catalyst-9400-series-switches/products-release-notes-list.html
Provides an overview of the hardware and software features introduced in every release, unsupported features, important restrictions
and limitations, and open and resolved caveats with the software.
Hardware Documentation
• Hardware Installation Guide:
Provides a functional overview of the switch, describes how to install and rack-mount the switch, and make connections to the
switch. It describes how to install the power supplies and how to replace the fan tray assembly. It also includes technical
specifications and troubleshooting guidance.
• Supervisor Module Installation Note:
b-c9400-sup-note.html
Provides an overview of the available supervisor modules, major features, chassis compatibility information, slot restrictions,
and describes how to correctly install and uninstall a supervisor module.
• Switching Module Installation Note:
b-c9400-mod-note.html
Provides an overview of the supported switching modules or line cards, major features, describes how to correctly install and
uninstall a switching module, and transceiver support.
• Regulatory Compliance & Safety Information Document:
hardware/regulatory/RCSI-0315-book.pdf
Consolidated list of safety warnings relevant to Catalyst 9400 Series Switches (all chassis models), supervisor modules, line
cards and any other hardware components.
Software Documentation
• Software Configuration Guide:
products-installation-and-configuration-guides-list.html
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https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/hardware/install/b_c9400_hig.html
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/hardware/sup_install/
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/hardware/sw_mod_install/
https://www.cisco.com/c/en/us/support/switches/catalyst-9400-series-switches/
https://www.cisco.com/c/dam/en/us/td/docs/switches/lan/catalyst9400/