Installing The System Board - Dell OptiPlex 3000TC Service Manual

Steps
1. Remove the screw (M3x5) that secures the speaker holder to the system board.
2. Lift and remove the speaker holder from the system board.
3. Remove the five (M3x5) screws and two (M3x4) screws that secure the system board to the computer chassis.
4. Lift and remove the system board from the computer chassis.

Installing the system board

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the connectors on your system board.
40 Removing and installing components