Dell PowerEdge T410 Hardware Owner's Manual page 124

5 Disconnect all the cables from the system board and drives.
NOTE:
from the system board and drives. You must route these cables properly when
you replace them to prevent them from being pinched or crimped.
6 Remove the screws that secure the power supply to the chassis and slide
the power supply out of the system. See Figure 3-17.
Figure 3-17. Removing and Installing a Non-Redundant Power Supply
1 screws (3)
124
Installing System Components
Note the routing of the power cables as you disconnect the cables
1