Dell OptiPlex 3000 Small Form Factor Service Manual page 76

Steps
1. Align and lower the system board into the system until the stand-off points at the back of the system board align with those
on the chassis.
2. Replace the seven (#6-32) screws to secure the system board to the chassis.
3. Route and connect all the cables that you disconnected from the system board.
4. Place and align the front I/O-bracket with I/O slot on the chassis.
5. Replace the screw (#6-32) that secures the front I/O-bracket to the chassis.
Next steps
1. Install the processor.
2. Install the heat-sink and fan
3. Install the WLAN card.
4. Install the solid-state
5. Install the memory modules.
6. Install the expansion card.
7. Install the Optional I/O
8. Install the disk-drive cage.
9. Install the 3.5-inch hard-drive.
10. Install the 2.5-inch hard-drive.
11. Install the front bezel.
12. Install the side cover.
13. Follow the procedure in
76 Removing and installing components
assembly.
drive.
modules.
after working inside your computer.