Dell 1950 Power Supplies

54 Installing System Components

Replacing the Memory Cooling Shroud

To install the memory cooling shroud, align the shroud directly over the memory modules and the

processors.

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.

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.

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.

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.

Disconnect the power cable from the power source.

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)