WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at dell.com/regulatory_compliance.
WARNING: Disconnect all power sources before opening the enclosure to replace, remove, or install accessories. After the installation is completed, the enclosure must be replaced and all fasteners installed before connecting to the power source.
CAUTION: Only a certified service technician is authorized to remove the computer cover and access any of the components inside the computer. See the safety instructions for complete information about safety precautions, working inside your computer, and protecting against electrostatic discharge.
CAUTION: To avoid electrostatic discharge, ground yourself by using a wrist grounding strap or by periodically touching an unpainted metal surface (such as a connector on your computer).
CAUTION: When you disconnect a cable, pull on its connector or on its
CAUTION: To avoid damaging the computer, perform the following steps before you begin working inside the computer.
1Ensure that the work surface is flat and clean to prevent the computer display from being scratched.
2Turn off your computer and all attached devices. See "Turning Off Your Computer" on page 11.
CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.
3Disconnect all telephone or network cables from the computer.
4Disconnect your computer and all attached devices from their electrical outlets.
5Disconnect all attached devices from your computer.
6Press and hold the power button while the computer is unplugged to ground the system board.
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