IBM BladeCenter S 7779, Installation Manual

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Power modules
The BladeCenter S system supports up to four autoranging power modules that
are capable of supporting either 110 V ac or 220 V ac.
Power module
AC power LED
DC power LED
Fault LED
There are two types of power modules. These power modules are identical except
for the power cord connector; one power module has a C14 connector and the
other power module has a C20 connector. Both types of power modules can be
installed in the same chassis.
Table 1. Power modules used in the BladeCenter S system
Power module with C14 connector
C14 connector
Power module with C20 connector
C20 connector
Within the BladeCenter S chassis, all power supplies are combined into a single
power domain, which distributes power to each of the blade servers and modules
through the system midplane.
2
BladeCenter S Types 7779 and 8886: Power Modules