Replacing A Power Supply Unit (Psu); Removing A Psu - Dell EMC ME4 Series Owner's Manual

Figure 58. Removing an IOM
NOTE: Although the figure shows a controller module instead of an expansion module, the form factors are very similar
and the latching mechanisms are identical.
5 Grip the latch handle and ease the IOM forward from the slot as shown in detail No.2 within
NOTE: Figure 56. Removing an IOM
discussed herein. They all use the same latch mechanism, but feature different face plate geometry.
6 Place both hands on the IOM body, and pull it straight out of the enclosure such that the controller module remains level during
removal.

Replacing a power supply unit (PSU)

Illustrations in the power supply unit module replacement procedures show rear panel views of the enclosure, and PSUs are properly aligned
for insertion into the PSU slots.
Before you begin any procedure, see

Removing a PSU

CAUTION: Removing a power supply unit significantly disrupts the enclosure's airflow. Do not remove the PSU until you have
received the replacement module. It is important that all slots are filled when the enclosure is in operation.
shows a 4-port SAS controller module. However, the procedure applies to all IOMs
ESD precautions.
Figure 56. Removing an IOM.
Module removal and replacement 71