3-5
Catalyst 3650 Switch Hardware Installation Guide
OL-29734-01
Chapter3 Power Supply Installation
Installation Guidelines
Installation Guidelines
Table 3 -1 lists the switches and the compatible power-supply modules. Observe these guidelines when
removing or installing a power supply or fan module:
•Do not force the power supply or fan 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. In some configurations, such as full PoE+ or power-sharing
mode, removing a power supply causes powered devices to shut down until the power budget
matches the input power of a single power supply. To minimize network interruption, hot swap the
power supply ensuring that the remaining supply has sufficient PoE power for all powered ports.
For the switch commands that display available power budget, see the software configuration guide.
Note For information on 250-W AC power supply support on the PoE-capable switch models, refer to the
Release Notes for the Cisco Catalyst 3650 Switch on Cisco.com.
Caution 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 cover.
Table3-2 Switch Power Supply Module LEDs
AC Power Supply Module LEDs
AC OK Description PS OK Description
Off
(AC LED is
off)
No AC input power. Off Output is disabled, or input is
outside operating range.
Green AC input power present. Green Power output to switch.
Red Output has failed.
DC Power Supply Module LEDs
DC OK Description PS OK Description
Off
(DC LED is
off)
No DC input power. Off Output is disabled, or input is
outside operating range.
Green DC input power present. Green Power output to switch.
Red Output has failed.