Juniper EX4100 Hardware Manual page 63

• Back-to-front, indicated by the label AIR IN and Juniper Azure Blue handle. The back-to-front airflow
direction means that cold air enters through the back of the switch, and hot air exits through the
front.
Figure 42 on page 54 shows the rear panel of an AFO fan module.
Figure 43 on page 54 shows the rear panel of an AFI fan module.
Figure 42: Rear Panel of an AFO Fan Module
Airflow Out label: AIR OUT (AFO)
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Figure 43: Rear Panel of an AFI Fan Module
Airflow In label: AIR IN (AFI)
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NOTE: You must install all the fan modules for optimal functioning of the switch.
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