8. Install the two screws to secure the optical drive to the chassis.Figure20. Installing the optical drive screws9. Connect the signal cable and the power cable to the new optical drive.10. Reinstall the front bezel. See “Replacing the front bezel” on page 82.What to do next:• To work with another piece of hardware, go to the appropriate section.• To complete the installation or replacement, go to “Completing the parts replacement” on page 113.Replacing the front audio and USB assemblyAttention: Do not open your computer or attempt any repair before reading and understanding the Chapter1 “Read this first: Important safety information” on page 1.To replace the computer handle, do the following:1. Remove any media from the drives and turn off all connected devices and the computer. Then,disconnect all power cords from electrical outlets and disconnect all cables that are connected to thecomputer.2. Remove the computer cover. See “Removing the computer cover” on page 82.3. Remove the front bezel. See “Replacing the front bezel” on page 82.4. Locate the front audio and USB assembly. See “Computer components” on page 31.5. Disconnect the front audio and USB assembly cables from the system board.Note: Ensure that you note the locations of the cables when you disconnect the cables from thesystem board.Chapter 9. Installing or replacing hardware 89