Installing The Power-Supply Unit - Dell OptiPlex 3090 Small Form Factor Service Manual

Steps
1. Remove the SATA cables from the retention clip on the support bracket.
2. Remove the three screws (M6X32) and slide the support bracket out from the slot.
3. Unroute the power-supply cable from the retention clip on the chassis.
4. Remove the three screws (M6X32) that secure the power-supply unit to the back of the chassis.
5. Press the power-supply unit release latch and slide the unit into the chassis.
6. Remove the power-supply unit out of the chassis.

Installing the power-supply unit

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the power-supply unit and provides a visual representation of the installation
procedure.
Removing and installing components 49