Dell OptiPlex GX110 - Manual (Page 136)

System Setup Navigation Keys
Table 1 lists the keys you use to view or change information on the System Setup screen and to exit the program.
Table 1. System Setup Navigation Keys
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Keys Action
or
Moves to the next field.
or
Moves to the previous field.
or
Cycles through the options in a field. In many fields,
you can also type the appropriate value.
or
Scrolls through help information.
Enters the selected field's pop-up options menu.
spacebar or
or
In the selected field's pop-up options menu, cycles
through the options in a field.
Exits System Setup without rebooting the system
and returns the system to its previous state
—the
boot routine. 1
Exits System Setup and reboots the system,
implementing any changes you have made.
Resets the selected option to its default setting.
1 For most of the options, any changes you make are recorded but do not take effect until the next time you boot the system. For a few options
(as noted in the help area), the changes take effect immediately.