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54 Installing System Components
Replacing the Memory Cooling Shroud
1
To install the memory cooling shroud, align the shroud directly over the memory modules and the
processors.
2
Using the interior system board cooling shroud as a guide, slowly lower the shroud straight down onto
the system, directly over the processors and memory modules.
3
Gently press around the periphery of the shroud until it engages with the external tabs and snaps into
place.
Power Supplies
Your system supports one or two power supplies rated at an output of 670 W. If only one power supply is
installed, it must be installed in the left power supply bay (bay 1). If two power supplies are installed, the
second power supply serves as a redundant, hot-plug power source.
NOTICE: In a non-redundant configuration, the power supply blank must be installed in the unoccupied power
supply bay to ensure proper system cooling. See "Installing the Power Supply Blank" on page 56.
Removing a Power Supply
NOTICE: The system requires one power supply for the system to operate normally. The system is in the redundant
mode when two power supplies are installed and both power supplies are connected to an AC power source.
Remove and replace only one power supply at a time in a system that is powered on. Operating the system with only
one power supply installed and without a power supply blank installed for extended periods of time can cause the
system to overheat.
NOTICE: If only one power supply is installed, it must be installed in the left power supply bay (1).
NOTICE: If you connect the system to a power source in the range of 120 to 220 VAC, and if two power supplies are
installed, the second power supply serves as a redundant, hot-plug power source.
NOTE: On your rack system, you may have to unlatch and lift the cable management arm if it interferes with power
supply removal. For information about the cable management arm, see the system’s Rack Installation Guide.
1
If your system has a single power supply, turn off the system and all attached peripherals. For a
redundant system, you can leave the system running and proceed to the next step.
2
Disconnect the power cable from the power source.
3
Disconnect the power cable from the power supply and remove the cable from the cable retention
bracket.
NOTICE: On a rack system, you may need to temporarily unlatch and lift the cable management arm. For
information about the cable management arm, see the system’s Rack Installation Guide.
1 memory cooling shroud 2 memory shroud release tab 3 memory modules (8)
4 system processors (2)