How to Replace the Power Supply Unit on OptiPlex 3090 Tower

This video will demonstrate the removal and reinstallation procedure of a power supply unit for OptiPlex 3090 Tower.

To remove the power supply unit, loosen the two screws securing the side cover. Lift the cover off the system, unlatch and remove the fan duct. Identify the power supply unit and unplug the cables. Remove the 3 screws and lift the power supply unit out of the system.

To reinstall the power supply unit, place it back in the system. And secure it with the 3 screws, reconnect the cables. Place the fan duct back in the system and secure the side cover with the 2 screws.