Cisco Catalyst 9400 Series

Step 5 Secure the chassis to the rack with either 10-32 or 12-24 pan head screws from the chassis standard accessory
kit.
Figure 24: Secure the Chassis to Rack
Step 6 Slide the air filter into the air filter slot.
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
75
Installing the Switch
Rack-Mounting the Chassis in a NEBS-Compliant Mode