9. Replace the optical drive (see Replacing the Optical Drive).Computer BaseRemoving the Computer Base1. Follow the instructions in Before You Begin.2. Remove the system board (see Removing the System Board Assembly).3. Remove the wireless sniffer board (see Removing the Wireless Sniffer Board).4. Remove the audio connector board (see Removing the Audio Connector Board).5. Remove the CIR board (see Removing the CIR Board).6. Remove the speaker assembly (see Removing the Speaker Assembly).Replacing the Computer Base1. Replace the speaker assembly (see Replacing the Speaker Assembly).2. Replace the CIR board (see Replacing the CIR Board).3. Replace the audio connector board (see Replacing the Audio Connector Board).4. Replace the wireless sniffer board (see Replacing the Wireless Sniffer Board).5. Complete the replacement of the computer base by following the procedures in Replacing the System Board Assembly.CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.NOTE: When removing the system board to replace the computer base, it is not necessary to remove the processor, memory, or Mini-Card.CAUTION: Before you begin the following procedure, follow the safety instructions in the Product Information Guide.NOTICE: Ensure that the rubber gasket is installed in the appopriate location for your processor. The gasket can be moved as needed.1 location for Intel processor 2 rubber gasket3 location for AMD processor