HP FlexFabric 7900 Series Installation Manual page 50

When a front-to-back airflow fan tray (JG684A) is used, ambient air flows in through the air vents
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in the port-side panel, circulates through the chassis and the power supplies, and exhausts through
the air vents in the fan tray panel and the power supply panels, as shown in
Figure 40 Airflow through the switch chassis with the back-to-front airflow fan tray (JG839A)
(1) Power supply air vents
(3) Port side air vents
Figure 41 Airflow through the switch chassis with the front-to-back airflow fan tray (JG684A)
(1) Power supply air vents
(3) Port side air vents
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(2) Fan tray air vents
(2) Fan tray air vents
Figure 41.
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