Dell OptiPlex SX280 - Manual (Page 16)

Security
Chassis Intrusion Detection
This feature detects that the chassis was opened and alerts the user. To change the Chassis Intrusion setting:
1. Enter system setup .
2. Press the down-arrow keys to move to the Security option.
3. Press to expand the Security menu.
4. Press the down-arrow key to move to the Chassis Intrusion setting.
5. Press to focus on the options frame.
6. Press the side-arrow keys to select an option setting.
7. Press to return to the Security menu.
8. Press to access the exit setup menu.
9. Press the side-arrow keys and select the Save/Exit option.
10. Press to save your changes and exit setup.
Option Settings
l On — If the computer cover is opened, the setting changes to Detected, and the following alert message displays during the boot routine at the next
computer start-up:
Alert! Cover was previously removed.
To reset the Detected setting, enter system setup . In the Chassis Intrusion option, press the left- or right-arrow key to select Reset, and then choose
On, On-Silent, or Disabled.
l On-Silent (default) — If the computer cover is opened, the setting changes to Detected. No alert message appears during the boot sequence at the
next computer start-up.
l Disabled — No intrusion monitoring occurs and no messages appear.
Padlock Ring and Security Cable Slot
Use one of the following methods to secure your computer:
l Use a padlock alone or a padlock and looped security cable with the padlock ring.
A padlock alone prevents the computer from being opened.
A security cable looped around a stationary object is used in conjunction with a padlock to prevent unauthorized movement of the computer.
l Attach a commercially available antitheft device to the security cable slot on the back of the computer.
Antitheft devices usually include a segment of metal-stranded cable with an attached locking device and key. The documentation that comes with the
device contains instructions for installing it.
NOTE: When the admin password is enabled, you must know the admin password before you can reset the Chassis Intrusion setting.
NOTE: Before you purchase an antitheft device, make sure that it works with the security cable slot on your computer.