Hardware Reference Guide

Removing the computer access panel
To access internal components, you must remove the access panel:
1. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as a USB ash drive, from the computer.
3. Turn o the computer properly through the operating system, then turn o any external devices.
4. Disconnect the AC power cord from the AC 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 AC power cord to avoid damage
to the internal components of the computer.
5. If the computer is on a stand, remove the computer from the stand and lay the computer down.
6. Loosen the thumbscrew on the rear of the computer (1).
7. Slide the panel forward and lift if o the computer (2).
NOTE: Your computer model may look slightly dierent from the illustration in this section.
10 Chapter 2 Hardware upgrades