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C
HAPTER
1: A
BOUT
THE
S
WITCH
4007
Power Supplies
The Switch 4007 can contain two back-loading,
930-watt, modular AC power supplies (Model
Number 3CB9EP9). The power supplies provide
power to the management modules, switch fabric
module, interface modules, fans, and backplane.
Figure 3 shows a 930-watt AC power supply in a
Switch 4007 chassis.
Figure 3
930-watt AC Power Supply in the Switch 4007
You can add or replace power supplies while the
chassis is running (referred to as
warm swapping
). See
Chapter 6, “Maintaining the Switch 4007”, for
instructions about how to replace a faulty power
supply.
930-watt AC Power Supply
Switch 4007 power supplies are autosensing. Each
power supply (Figure 3) can automatically sense the
type of input voltage to which it is being connected at
the electrical outlet.
The power supplies are load sharing in that all power
supplies provide an equal amount of the load current.
Each 930-watt power supply has its own power cord
and is shipped separately from the chassis. The type
of power cord depends on your country location.
Figure 4 shows the 930-watt AC power supply for the
Switch 4007 chassis.
Figure 4
930-watt AC Power Supply for the Switch 4007
Power
supply
slot 2
Power
supply
(in slot 1)
Spring-loaded
screw
Power supply
handle
Standby/On
switch
AC input
socket