HP Deskpro EN Supplementary Manual page 66

Using a Power Strip
to Control Power
B-6 System Board Jumpers and Switches
When you restart the computer and the screen displays a message
that says "system options not set," you should verify the system
date and time.
After the CMOS jumper is removed, your passwords will become
invalid because the passwords are stored in the configuration
memory. You will need to reset your passwords and any special
system setups. Refer to the Software Reference Guide.
If you connect your computer to an electric power strip and
would like to turn on power to the computer using the switch on
the power strip, set S6 on SW1 to ON.
If you turn off power to your computer using the switch
on a power strip, you will drain the computer's battery
and will not be able to use the Suspend feature or the
Remote Management features. See the Software
Reference Guide for more information about the Suspend
feature and Remote Management features.