Dell Precision 490 Desktop User Manual

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 Chassis Intrusion Switch
DellPrecision™Workstation490User'sGuide
Removing the Chassis Intrusion Switch
Replacing the Chassis Intrusion Switch
Resetting the Chassis Intrusion Detector
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Removing the Chassis Intrusion Switch
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1. Follow the procedures in Before You Begin.
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2. Remove the computer cover (see Removing the Computer Cover).
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3. Disconnect the chassis intrusion switch cable from the system board.
Note the routing of the chassis intrusion switch cable as you remove it from the chassis. Chassis hooks may hold the cable in place inside the chassis.
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4. Slide the chassis intrusion switch out of its slot, and remove the switch and its attached cable from the computer.
Replacing the Chassis Intrusion Switch
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1. Gently slide the chassis intrusion switch into its slot and reconnect the cable to the system board.
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2. Replace the computer cover (see Replacing the Computer Cover).
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3. Connect your computer and devices to electrical outlets, and turn them on.
Resetting the Chassis Intrusion Detector
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1. Turn on (or restart) your computer.
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2. WhentheblueDELL™logoappears,press<F2>immediately.
If you wait too long and the operating system logo appears, continue to wait until you see the Microsoft®Windows®desktop. Then shut down your
computer (see Turning Off Your Computer) and try again.
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3. Enter the system setup program (see System Setup).
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4. Press the down-arrow key to move to the Security option.
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5. Press <Enter> to access the menu.
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6. Use the down-arrow key to select Intrusion Alert.
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7. Use the left- and right-arrow keys to select Reset, and then choose On, On-Silent, or Disabled.
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8. Restart the computer and implement your changes.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before opening the cover.
NOTICE: To prevent static damage to components inside your computer, discharge static electricity from your body before you touch any of your
computer's electronic components. You can do so by touching an unpainted metal surface on the computer.
NOTICE: To connect a network cable, first plug the cable into the network port or device and then plug it into the computer.
NOTE: The default setting is On-Silent.

Dell Precision 490 Desktop Specifications

General

Brand	Dell
Model	Precision 490 Desktop
Category	Desktop
Language	English