Cisco Catalyst 3650 Series Manual page 19

Chapter 1 Product Overview
For Catalyst 3650 switches where stacking is specified, StackWise adapters are preinstalled in the
StackWise ports, and optional StackWise cables can be ordered. When stacking is not specified, but is
required, the StackWise adapter blanks must be removed and StackWise adapters installed. For more
information on connecting switches for stacking see
page
Use only approved cables, and connect only to similar Cisco equipment. Equipment might be damaged
Caution
if connected to nonapproved Cisco cables or equipment.
You cannot have a switch stack containing a mix of Catalyst 3650 and Catalyst 3850 switches.
Note
Power Supply Modules
The 24- and 48-port switches are powered through one or two internal power supply modules.
Supported power supply modules:
•
•
•
•
The switch has two internal power supply module slots. You can use two AC modules, two DC modules,
a mixed configuration of one AC and one DC power supply module, or one power supply module and a
blank cover. The switch can operate with either one or two active power supply modules.
Table 1-1
modules (except the blank covers) have internal fans. All switches ship with a blank cover in the second
power supply slot if switches are configured with only one power supply.
Do not operate the switch with one power supply module slot empty. For proper chassis cooling, both
Caution
power supply module slots must be populated, or with either a power supply or a blank cover.
The 250-W and 640-W AC power supply modules are autoranging units that support input voltages
between 100 and 240 VAC. The 1025-W power supply module is an autoranging unit that supports input
voltages between 115 and 240 VAC. The 640-W DC power supply module supports input voltages
between -40 and -60 VDC.
For information on 250-W AC power supply support on the PoE-capable switch models, refer to the
Note
Release Notes for the Cisco Catalyst 3650 Switch on Cisco.com.
Each AC power supply module has a power cord for connection to an AC power outlet. The 1025-W and
640-W modules use a 16-AWG cord (only North America). All other modules use an 18-AWG cord. The
DC-power supply module must be wired to a DC-power source.
Table
switches.
OL-29734-01
2-15.
PWR-C2-250WAC=
PWR-C2-640WAC=
PWR-C2-1025WAC=
PWR-C2-640WDC=
shows the default power supply modules that ship with each switch model. All power supply
1-10, Table 1-11, and Table 1-12
"Connecting to the StackWise Ports" section on
show the PoE available and PoE requirements for Catalyst 3650
Catalyst 3650 Switch Hardware Installation Guide
Rear Panel
1-17