System Board; Removing The System Board - Dell OptiPlex 3090 Small Form Factor Service Manual

2. Insert the optional I/O module into its slot from the inside of your computer.
3. Connect the I/O cable to the connector on the system board .
4. Replace the two (M3X3) screws to secure the optional I/O module to the system.
Next steps
1. Install the fan assembly.
2. Install the front bezel.
3. Install the side cover.
4. Follow the procedure in

System board

Removing the system board

Prerequisites
1. Follow the procedure in
2. Remove the side cover.
3. Remove the front bezel.
4. Remove the 3.5/2.5-inch hard-drive
5. Remove the solid-state
6. Remove the WLAN card.
7. Remove the heat-sink and fan
8. Remove the memory modules.
9. Remove the processor.
About this task
The following images indicate the location of the system board and provide a visual representation of the removal procedure.
58 Removing and installing components
After working inside your
Before working inside your
assembly.
drive.
assembly.
computer.
computer.