Dell Latitude CPx J - Manual (Page 140)

In order for the Ring/Event Resume option to work properly, this feature must be enabled in the
device driver for your modem PC Card. All drivers supplied by Dell with your computer are configured
to allow the computer to resume normal operation when a modem receives an incoming call. If you
use a PC Card that you did not receive from Dell, check the documentation to make sure this feature
is set to Enabled.
A change to the Ring/Event Resume option takes effect immediately (rebooting is not required).
S2D Time-out
S2D Time-out lets you determine how long your computer remains idle (no I/O activity) before activating
suspend-to-disk (S2D) mode to conserve battery power.
NOTE: With systems running under ACPI, settings for power management features, such as key
combinations and suspend-to-disk mode, are controlled from the Power Management Properties
window in the Control Panel. The key combinations of <Fn><a> or <Scroll Lock><a> may not
function with ACPI if the settings have not been activated from the Power Management Properties
window.
The suspend-to-disk mode is referred to as the hibernate mode for systems running ACPI. To
activate the hibernate mode, make sure that you have configured the appropriate key combinations
from the Power Management Properties window.
Settings for this option in both the AC and Battery categories are:
Disabled
30 Minutes
1 Hour
2 Hours
3 Hours 4 Hours
6 Hours
8 Hours (default)
12 Hours
A change to the S2D Time-out option takes effect immediately (rebooting is not required).
If you are not in the System Setup program, you can activate S2D Time-out mode at any time by pressing
<Fn><a>. Press the power switch to resume from S2D 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: