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Catalyst 3750-E and Catalyst 3560-E Switch Hardware Installation Guide
OL-9774-03
Chapter 1 Product Overview
Rear Panel Description
You can order these StackWise cables from your Cisco sales representative:
• CAB-STACK-50CM= (0.5-meter cable)
• CAB-STACK-1M= (1-meter cable)
• CAB-STACK-3M= (3-meter cable)
Power-Supply Modules
The 24- and 48-port switches are powered through an internal power-supply module. The “24- and
48-Port Switch Power-Supply Modules” section on page 1-15 and Table 1-11 describe the supported
power-supply modules for the switches.
The Catalyst 3560E-12D and 3560E-12SD switches are powered through two internal power-supply
modules. The
“Catalyst 3560E-12D and 3560E-12SD Switch Power-Supply Modules” section on
page 1-16 and Table 1-13 describe the supported power-supply modules for the switch.
24- and 48-Port Switch Power-Supply Modules
The 24- and 48-port switches have one internal 265-W, 750-W, or 1150-W power-supply module
(
Table 1-11). The 265-W and 750-W AC-power-supply modules are autoranging units that support input
voltages between 100 and 240 VAC. The 1150-W power-supply module is an autoranging unit that
supports input voltages between 115 and 240 VAC. The DC-power-supply module has dual input feeds
(A and B) and supports input voltages between 36 and 72 VDC.
The AC-power-supply modules have a power cord for connection to an AC power outlet. The 1150-W
and 750-W modules use a 16-AWG cord (only North America). All other modules use an 18-AWG cord.
The DC-power-supply module requires wiring to a DC-power source.
For switches connected to an RPS 2300, the RPS 2300 powers the switch when the power-supply is
removed or fails. When a new switch power supply is inserted, the switch software polls the device. The
switch power supply then automatically resumes providing power, and the RPS
2300 is available to
power other devices.
Ta b l e 1-11 24- and 48-Port Switch Power-Supply Modules
Power-Supply Module
48-Port PoE
Switch
1. For full 15.4-W support on a 48-port PoE switch, you must use the C3K-PWR-1150WAC-power-supply module.
1
C3K-PWR-1150WAC= Primary or spare Spare Spare Spare
C3K-PWR-750WAC= Spare or primary Primary or spare Spare Spare
C3K-PWR-265WAC= Not allowed Not allowed Primary or spare Primary or spare
C3K-PWR-265WDC= Not allowed Not allowed Primary or spare Primary or spare
24-Port PoE
Switch
48-Port non-PoE
Switch
24-Port Non-PoE
Switch