Advanced Features 61
Power Management
Your computer can be set to use less power when you are not working. You
control the power usage through the OS installed on your computer and
certain option settings in system setup. These periods of reduced power are
called "sleep states":
•Standby. In this sleep state, power is reduced or turned off for most
components, including the cooling fans. However, system memory
remains act ive.
This state is not supported by Windows NT® 4.0.
NOTE: All components installed in the computer must support this
feature and have the appropriate drivers loaded to enter standby. For
more information, see the manufacturer’s documentation for each
component.
•Hibernate. This sleep state reduces power consumption to a minimum
by writing all data in system memory to a hard drive and then
removing system power. Waking up from this state restarts the
computer, and the memory contents are restored. Operation then
resumes where the computer left off when it entered the hibernation
state.
This state is not supported by Windows NT 4.0.
NOTE: All components installed in the computer must support this
feature and have the appropriate drivers loaded to enter hiber nation. For
more information, see the manufacturer’s documentation for each
component.
•Shutdown. This sleep state removes all power from the computer
except a small auxiliary amount. As long as the computer remains
connected to an electrical outlet, it can be automatically or remotely
started. For example, the Auto Power On option in system setup
allows the computer to automatically start at a specified time. Also,
your network administrator can remotely start your computer using a
PME such as Remote Wake Up.
The following table lists the sleep states available for each operating system
and the methods you can use to wake the computer from each state.