Dell OptiPlex GX1 - Manual (Page 71)

System Setup Options: Dell OptiPlex GX1 Small-Form-Factor System User's Guide
file:///C|/infodev/2013/eDoc/OpGX1/UG/setupopt.htm[2/21/2013 11:47:16 AM]
For example, you may have a memory expansion card that needs to be addressed starting at 15 MB.
Selecting the 15M - 16M option in the Reserved Memory option specifies that the base memory from 15 to
16 MB comes from the memory expansion card (the base memory below the 15-MB address comes from the
dual in-line memory modules [DIMMs] on the system board).
The Reserved Memory option has the following settings:
None (the default option)
512K - 640K
15M - 16M
CPU Speed
CPU Speed indicates the processor speed at which your system boots.
Press the left- or right-arrow key to toggle the CPU Speed option between the resident microprocessor’s
rated speed (the default) and a lower compatibility speed, which lets you accommodate speed-sensitive
application programs. A change to this option takes effect immediately (rebooting the system is not required).
You can also toggle between the rated processor speed and the compatibility speed while the system is
running in real mode by pressing <Ctrl><Alt><\>. (For keyboards that do not use American English, press
<Ctrl><Alt><#>.)
Num Lock
Num Lock determines whether your system boots with the Num Lock mode activated on 101- or 102-key
keyboards (it does not apply to 84-key keyboards).
When Num Lock mode is activated, the rightmost bank of keys on your keyboard provides the mathematical
and numeric functions shown at the tops of the keys. When Num Lock mode is turned off, these keys provide
cursor-control functions according to the label on the bottom of each key.
Chassis Intrusion
Chassis Intrusion displays the status of the system chassis intrusion monitor. The settings for this option
are Enabled, Enabled-Silent, or Disabled. The default is Enabled.
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 messages are displayed.