2SHUDWLQJLWKD6HWXS3DVVZRUGQDEOHG | Dell GX1, NX1 guide

If the computer cover is removed while the intrusion monitor is set to Enabled, the setting changes to Detected, and the following message appears during the boot sequence at the next system start-up:

Alert! Cover was previously removed.

If the computer cover is removed while the intrusion monitor is set to Enabled- Silent, the setting changes to Detected, but the alert message is not displayed during the boot sequence at the next system start-up.

If the intrusion monitor is set to Disabled, no intrusion monitoring occurs and no mes- sages are displayed.

To reset the Detected setting, enter the System Setup program during the system’s power-on self-test (POST). At the Chassis Intrusion option, press any edit key to reset the setting, and then choose Enabled, Enabled-Silent, or Disabled.

NOTE: When the setup password is enabled, the setup password is required to reset the Chassis Intrusion option.

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DAC Snoop lets you correct video problems that may occur when certain video expansion cards are used. The default is Off. If you are using a video expansion card and problems such as incorrect colors or blank windows occur, set DAC Snoop to On.

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This option controls the operation of the system’s Advanced Configuration and Power Interface (ACPI) feature. The default is On.

When ACPI is set to On, momentarily pressing the power button places the system in a power-saving mode. To turn the system off completely, press the power button for more than four seconds. When ACPI is set to On, interrupt request (IRQ) line 9 is not available for use by an expansion card.

When ACPI is set to Off, momentarily pressing the power button turns off the system completely. With this setting, IRQ9 is available for use by an expansion card.