Maintenance and Service Guide

Option port board
For a list of available option port boards, see Computer major components on page 4.
An option port board can be installed under the heat sink near the back of the system board that provides an
additional connector on the rear I/O panel.
To remove the option port board:
1. Prepare the computer for disassembly (Preparation for disassembly on page 17).
2. Remove the access panel (Access panel on page 18).
3. Remove the fan (Fan on page 40).
4. Remove the heat sink (Heat sink on page 41).
5. Remove the two Phillips screws (1) that secure the board to the system board.
6. Lift to disengage the board from the system board connector, and then remove the option board from
the computer (2).
To install the option port board, reverse the removal procedures.
46 Chapter 4 Removal and replacement procedures