Serial Port; Service Tag; Smart Cpu Mode - Dell Latitude CP Reference And Troubleshooting Manual

Settings for this option in both the AC and Battery cate-
gories are:
•
Disabled
•
30 Minutes
•
1 Hour
•
2 Hours
•
3 Hours
A change to the S2D Time-Out option takes effect immedi-
ately (rebooting is not required).
If you are not in the System Setup program, you can acti-
vate suspend-to-disk mode at any time by pressing
<Fn><a>. Press the power switch to resume from suspend-to-
disk mode.

Serial Port

Serial Port allows you to map the address of the serial
port or to disable the serial port.
Settings for this option are:
•
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 five-character ser-
vice 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 sup-
port software, including diagnostics.
There are no user-selectable settings for this option.
NOTE: Convert the service tag number into an express
service code when prompted to do so the first time you
•
4 Hours
•
6 Hours
•
8 Hours (default)
•
12 Hours
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 auto-
mated 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.
Settings for this option are:
•
Enabled — Allows 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
The default for Smart CPU Mode is Enabled if the com-
puter is operating on battery power. If the computer is
using AC power, the default for this option is Disabled.
To increase battery operating time, set the Smart CPU
Mode option to Enabled.
When the Smart CPU Mode option is enabled and the micro-
processor is inactive, the computer slows the microprocessor to
save power.
NOTES: Some communications software may not work
properly when Smart CPU Mode is enabled. Dell recom-
mends that you set Smart CPU Mode to Disabled if you are
using communications software.
Interactive application programs should function well
when Smart CPU Mode is enabled. (Examples of interactive
programs include spreadsheet, text editor, graphics design,
entertainment, educational, and utility programs.) However, you
may experience performance degradation when recalculating a
large spreadsheet or during an extensive screen redraw in a
graphical program. Benchmark utilities may not perform as
intended when doing microprocessor speed tests. If the software
you use suffers significant performance degradation, set Smart
CPU Mode to Disabled.
A change to the Smart CPU Mode option takes effect imme-
diately (rebooting is not required).
Using the System Setup Program 2-11