Dell OptiPlex GX1p Dell OptiPlex GX1 and GX1p Midsize Managed PC Systems Refe - Page 41
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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 options: None (the default option) 512K - 640K 15M - 16M 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 . (For keyboards that do not use American English, press .) 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 displays the status of the system chassis intrusion monitor. The default setting is Not Detected. If the computer cover is removed, the setting changes from Not Detected to Detected and the following message is displayed during the boot sequence at system start-up: Alert! Cover was previously removed. To clear this field and allow future intrusions to be detected, enter the System Setup program during the system's power-on self-test (POST), as described earlier in this chapter. At the Chassis Intrusion option, use the left- or right-arrow key to choose Reset. This action changes the setting to its default value, Not Detected. NOTE: When enabled, the setup password is required to reset the Chassis Intrusion option from Detected to Not Detected. Using the System Setup Program 2-7