Cisco Catalyst 9300 Series Hardware Installation Manual page 52

Attaching the Rack-Mount Brackets
2
3
Step 2 For Network Equipment-Building Standards (NEBS) compliant installations, perform the following steps:
a) Stick the labels available with CAT-A-AIRFLOW kit on to each side of the switch as shown in the
following illustration. Make sure you align the holes in the labels with the screw holes in the chassis.
b) Secure the brackets to the chassis using the flat head screws provided with the bracket.
Note
To comply with NEBS, GR-63, the switch airflow direction must be from the front (cold) to the rear
(hot). Attaching the air vent labels in the CAT-A-AIRFLOW kit ensures proper airflow by preventing the
intake of hot air into the chassis through the side vents, which could otherwise result in overheating of the
chassis.
Figure 25: Attaching the NEBS-Compliant Air Vent Label to the Switch
1
2
Cisco Catalyst 9300 Series Switches Hardware Installation Guide
40
Number-8 Phillips flat-head screws
Mid-mounting position
NEBS is supported only with four-point mounting.
Number-8 Phillips flat-head screws
19-inch bracket
5 Four-point mounting positions
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3 NEBS-compliant
CAT-A-AIRFLOW kit
- -
Installing a Switch