Juniper EX4100 Hardware Manual page 74

NOTE: The front side of a switch is the side where the ports are located. The rear side is where
the fans are located.
Figure 51: Back-to-Front Airflow Through the EX4100-48T-AFI Switch
Mixing components with different airflow directions in the same chassis hampers the performance of
the cooling system of the switch and leads to overheating of the chassis.
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