Dell OptiPlex 3040 - Installing the Optional Ethernet Port Card; Removing the Power Supply Unit (PSU)

4. Close the release latch.
5. Install the:
a. bezel
b. cover
6. Close the front bezel door.
7. Follow the procedure in After Working Inside Your Computer.
Removing the power supply unit (PSU)
1. Follow the procedure in Before Working Inside Your Computer.
2. Remove the:
• cover
• bezel
3. Open the front bezel door.
4. To remove the PSU:
a. Remove the screws that secure the PSU to the computer [1].
b. Disconnect the PSU cables from the connectors on the system board [2, 3].
c. Unroute the PSU cables from the retention clips.
d. Press the metal release tab [4], slide and lift the PSU out of the computer [5].
Installing the power supply unit (PSU)
1. Insert the PSU into the PSU slot and slide it toward the back of the computer until it clicks into place.
2. Tighten the screws to secure the PSU to the computer.
3. Route the PSU cables through the retention clips.
4. Connect the PSU cables to the connectors on the system board.
5. Close the front bezel door.
6. Install the:
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