Figure 14: Front-to-Back Airflow Through EX4650 Switch Chassis
You must install only power supplies that have AIR OUT (AFO) labels in switches that have fan modules
with AIR OUT (AFO) labels.
Back-to-Front Airflow
In the EX4650 switch models that have back-to-front airflow, the air intake to cool the chassis is through
the vents on the rear panel and hot air exhausts through the vents on the front panel of the switch. See
Figure 15 on page 38.
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