DescriptionPS OKDescriptionAC OK
Output is disabled, or
input is outside operating
range.
OffNo AC input power.Off (AC LED is off)
Power output to switch.GreenAC input power is
present.
Green
Output has failed.Red
Installation Guidelines
Observe these guidelines when removing or installing a power supply module:
• Do not force the power supply module into the slot. This can damage the pins on the switch if they are
not aligned with the module.
• A power supply that is only partially connected to the switch can disrupt the system operation.
• Remove power from the power-supply module before removing or installing the module.
• The power supply is hot-swappable.
Do not operate the switch with one power-supply module slot empty. For proper chassis cooling, both module
slots must be populated, with either a power supply or a blank module.
Caution
Blank faceplates and cover panels serve three important functions: they prevent exposure to hazardous voltages
and currents inside the chassis; they contain electromagnetic interference (EMI) that might disrupt other
equipment; and they direct the flow of cooling air through the chassis. Do not operate the system unless all
cards, faceplates, front covers, and rear covers are in place. Statement 1024
Warning
Do not reach into a vacant slot or chassis while you install or remove a module. Exposed circuitry could
constitute an energy hazard. Statement 206
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement
1030
Warning
If a Cisco external power system is not connected to the switch, install the provided connector cover on the
back of the switch. Statement 386
Warning
Power Supply Installation
4
Power Supply Installation
Installation Guidelines
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