IBM Aptiva Handbook page 55

Check parallel port activity
Use this option to specify whether your computer
checks the parallel port to determine whether you are
using your computer.
If the Standby feature is enabled and you enable this
setting, your computer will not enter Standby while the
parallel port is active. If your computer enters Standby, it
will return to the desktop when the parallel port
becomes active.
If the Automatic Power Off feature is enabled and you
enable this setting, your computer will not turn itself off
while the parallel port is active.
Check other device activity
Use this option to select a device or group of devices for
your computer to check to determine whether you are
using your computer. You can select from a list of drives
or adapter card functions.
If the Standby feature is enabled and you enable this
setting, your computer will not enter Standby while the
selected device is active. If your computer enters
Standby, it will return to the desktop when the selected
device becomes active.
If the Automatic Power Off feature is enabled and you
enable this setting, your computer will not turn itself off
while the selected device is active.
On/off button mode
Use this option to control whether the Rapid Resume
feature works with the on/off button on your system
unit.
If you select the Rapid Resume setting, then when you
use the on/off button to turn off your system unit, your
computer saves the state of your desktop and then turns
your system unit off. The next time you turn your
computer on, the desktop appears the way you left it.
If you select the Power Off setting, then when you use
the on/off button to turn off your system unit, your
computer turns off immediately and does not save the
state of your desktop. You can still have Rapid Resume
save your desktop, however, by selecting Suspend from
the Start button on your desktop when you are ready to
turn off your computer.
As with all Setup Utility settings, you must save your
changes and exit the Setup Utility before the new
settings can take effect. If you change the On/Off Button
Mode setting from Power Off to Rapid Resume and then
press the on/off button on your system unit before you
save and exit from the Setup Utility, Rapid Resume will
not be set to work with your on/off button.
Using the Setup Utility 41