Removing A Power Supply Unit Blank; Installing A Power Supply Unit Blank - Dell EMC PowerEdge T440 Installation And Service Manual

NOTE: When two identical PSUs are installed, power supply redundancy (1+1 – with redundancy or 2+0 – without redundancy) is
configured in system BIOS. In redundant mode, power is supplied to the system equally from both PSUs when Hot Spare is
disabled. When Hot Spare is enabled, one of the PSUs is put into the sleep mode when system utilization is low in order to
maximize efficiency.
NOTE: If two PSUs are used, they must be of the same maximum output power.

Removing a power supply unit blank

Prerequisite
Follow the safety guidelines listed in
Step
If you are installing a second power supply unit, remove the power supply unit blank in the bay by pulling the blank outward.
CAUTION: To ensure proper system cooling, the power supply unit blank must be installed in the second power supply
unit bay in a non-redundant configuration. Remove the power supply unit blank only if you are installing a second power
supply unit.
Figure 77. Removing a power supply unit blank
Next step
Install the second power supply unit blank.

Installing a power supply unit blank

Prerequisite
1 Follow the safety guidelines listed in
NOTE: Install the power supply unit (PSU) blank only in the second PSU bay.
Step
Align the PSU blank with the PSU slot and push it into the PSU slot until it clicks into place.
Safety instructions.
Safety instructions.
Installing and removing system components 129