Installing A Power Supply Unit - Dell EMC PowerEdge R640 Installation And Service Manual

2 Disconnect the power cable from the power source and from the PSU you intend to remove, and then remove the cable from the
strap on the PSU handle.
3 Unlatch and lift the optional cable management arm if it interferes with the PSU removal.
For information about the cable management arm, see the system's rack documentation at Dell.com/poweredgemanuals.
Steps
Press the release latch and slide the PSU out of the system by using the PSU handle.
Figure 100. Removing a power supply unit
Next steps
Install the PSU or the PSU blank.
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Installing a power supply unit

Installing a power supply unit blank
Installing a power supply unit
The procedure for installing AC and DC PSUs is identical.
Prerequisites
1 Follow the safety guidelines listed in
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
Slide the PSU into the system until the PSU is fully seated and the release latch snaps into place.
144 Dell EMC PowerEdge R640 Installation and Service Manual
Installing and removing system components
Safety instructions.