COM1
(the default) — Maps the serial port to COM1
COM2
— Maps the serial port to COM2
COM3
— Maps the serial port to COM3
COM4
— Maps the serial port to COM4
Disabled
— Disables the serial port and its assigned COM address, freeing that interrupt for another
device to use
For a change in the
Serial Port
option to take effect, you must reboot your computer.
Service Tag
Service Tag
displays the computer's service code, which was programmed into NVRAM by Dell during the
manufacturing process. Be prepared to supply this identification during technical assistance or service calls.
The service tag is also accessed by certain Dell support software, including diagnostics. No user-selectable
settings are available for this option.
NOTE: Convert the service tag number into an express service code when prompted to do so the first
time you turn on the computer (or use the program in the
Dell Accessories
folder). Keep the code
handy in case you call Dell for technical assistance. The code helps Dell's automated support
telephone system direct your call more efficiently.
Smart CPU Mode
Smart CPU Mode
allows the computer to slow down the microprocessor automatically if it is not being
actively used. This feature is a key component to the thermal control of the system.
NOTE: With systems running under ACPI, power management settings are controlled from the
Power
Management Properties
window in the
Control Panel
. Certain features require configuration
through the
Power Management Properties
window and others may not function with ACPI.
Settings for this option are:
Enabled
(the default) — Saves power, helps to lower system temperatures, and extends battery life by
allowing the computer to slow down the microprocessor when it is inactive
Disabled
— Keeps the microprocessor running at its normal operating speed regardless of
microprocessor inactivity (can reduce battery life)
NOTES: In rare situations, some communications software may not work properly when
Smart CPU
Mode
is enabled. Dell recommends that you set
Smart CPU Mode
to
Disabled
if your computer is
experiencing performance degradation.
Interactive application programs should function well when
Smart CPU Mode
is set to
Enabled
.
(Examples of interactive programs include spreadsheet, text editor, graphics design, entertainment,
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