Figure 38
Rear view of the HP 7904 switch
(1) Power supply slots
(2) From top down: console port and management
Ethernet port
(3) From top down: system status LED (SYS), ID LED,
fan status LED (FAN), reset button (RST), and LPU
status LED (SLOT)
(4) Fan tray slots
(5) USB port
NOTE:
•
There are two power supply slots on the rear panel of the HP 7904 chassis. The switch comes with the
power supply slots empty. Filler panels are included in the accessory kit. You can install one or two
power supplies.
shows the rear view of an HP 7904 switch installed with two PSR1800-56A
power supplies.
•
There are two fan tray slots on the rear panel of the HP 7904 chassis. To ensure good heat dissipation,
you must install two fan trays of the same model.
shows the rear view of an HP 7904 switch
installed with two front-to-back airflow fan trays (JG684A).
Figure 39
Left side the HP 7904 switch
(1) Primary grounding point
(2) Auxiliary grounding point
Hardware specifications
Weight
The total weight of the switch is less than 40 kg (88.18 lb), indicating the weight of the switch when the
switch is fully configured with LPUs, power supplies, fan trays, and transceiver modules.
41
Summary of Contents for FlexFabric 7900 Series
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