Cisco Catalyst 9400 Series

Step 3 Rest the back end of the chassis on the edges of the shelf bracket rails and slide it in until the first pair of
handles on both sides of the chassis are near the rack posts.
Step 4 Push in the handholds that are closest to the rack posts
Figure 16: Sliding the Chassis in - Part 1
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
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Installing the Switch
Rack-Mounting the Chassis