3. Turn o the computer properly through the operating system, then turn o any external devices.
4. Disconnect the power cord from the power outlet and disconnect any external devices.
CAUTION: Regardless of the power-on state, voltage is always present on the system board as long as
the system is plugged into an active AC outlet. You must disconnect the power cord to avoid damage to
the internal components of the computer.
5. Remove the computer access panel. See Removing the computer access panel on page 8.
6. If you are installing a slim optical drive in a bay covered by a bezel blank, remove the front bezel and
then remove the bezel blank. See Removing an optical drive bezel blank on page 11 for more
information.
7. Follow the instructions for removing the optical drive if one was installed. Refer to Removing a 9.5 mm
slim optical drive on page 22.
8. Align the small pin on the release latch with the small hole on the side of the drive and press the latch
rmly onto the drive.
24 Chapter 2 Hardware upgrades
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