3-5
Catalyst 3750-X and 3560-X Switch Hardware Installation Guide
OL-19593-01
Chapter 3 Power Supply and Fan Module Installation
Installation Guidelines
Figure 3-5 Power Supply Slot Cover
The power supply modules have two status LEDs.
Installation Guidelines
Table 1-16 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 or fan module 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.
1 Release handles 2 Retainer clips
253564
2
1
Ta b l e 3-4 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.
