Owners Manual

Removing a power supply unit
Prerequisites
CAUTION: The system needs one power supply unit (PSU) for normal operation. On power-redundant systems,
remove and replace only one PSU at a time in a system that is powered on.
1. Follow the safety guidelines listed in Safety instructions.
2. Disconnect the power cable from the power source and from the PSU you intend to replace.
3. Remove the cable from the strap on the PSU handle.
4. Unlatch and lift the optional cable management arm if it interferes with the PSU removal.
For information about the cable management arm, see the related rack documentation at www.dell.com.
Steps
1. Press the release latch to disengage the PSU from the system.
2. Hold the PSU handle and slide the PSU out of the system.
Figure 58. Removing a power supply unit
Next steps
1. Install the power supply units
Installing a power supply unit
Prerequisites
1. Follow the safety guidelines listed in Safety instructions.
2. For systems that support redundant PSU, ensure that both the PSUs are of the same type and have the same maximum
output power.
NOTE: The maximum output power (shown in watts) is listed on the PSU label.
Steps
Push the PSU into the slot on the system until the release latch snaps into place.
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Installing and removing system components