Cisco Catalyst 9400 Series

Switching module slots (1,and 4)5Chassis handholds1
Chassis Radio Frequency ID (RFID)6Power supply modules2
Chassis model number7Fan tray assembly3
System ground8Supervisor module slots (2 and 3)4
Rear View of the Catalyst 9404R Switch
The figure shows a rear view of the chassis, with the major components identified:
Cisco Catalyst 9400 Series Switches Hardware Installation Guide
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Product Overview
Catalyst 9404R Switch