Dell Alienware Aurora (Late 2009) - Manual (Page 67)

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CHAPTER 13: SYSTEM BOARD
System Board
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
www.dell.com/regulatory_compliance.
WARNING: Do not operate your computer with any cover(s) (including
computer covers, bezels, filler brackets, front-panel inserts, etc.)
removed.
WARNING: To guard against electrical shock, always unplug your
computer from the electrical outlet before removing the side panel(s).
CAUTION: Only a certified service technician should perform repairs on
your computer. Damage due to servicing that is not authorized by Dell™
is not covered by your warranty.