3 Disconnect the modem/telephone cable, if present.
WARNING: To reduce the risk of personal
injury from electrical shock or hot
surfaces, disconnect the power cord from
the wall outlet, and allow the internal
system components to cool before
4 Disconnect the power cord from the electrical outlet
and then from the PC.
5 Disconnect all other attached cables (such as the
keyboard, mouse, and monitor) and all external
CAUTION: Static electricity can damage the
electronic components of the PC or
optional equipment. Ensure that you are
discharged of static electricity by briefly
touching a grounded metal object.
After Closing the PC
To avoid injury and equipment damage, always
follow this procedure in this order after closing the PC:
1 Reconnect the power cord.
WARNING: To reduce the risk of electrical
shock, fire, or damage to the equipment,
do not plug telecommunications or
telephone connectors into the network
interface card (NIC) (labeled as an
2 Reconnect the modem/telephone cable and all
other attached cables (such as the keyboard,
mouse, and monitor) and external devices.
3 Turn on the PC and all peripherals.
4 If you installed an add-in card, install any software
drivers supplied by the card manufacturer.
Upgrading and Servicing Guide
Removing the Side Panel
1 See "Before Opening the
PC" on page 1.
2 Loosen the two
thumbscrews on the right
side of the back panel.
The first time you loosen
these screws, you may
need to use a Phillips
Beware of sharp
edges inside the
3 Slide the panel back about 2.5 cm (1 inch), lift it
off the unit, and set it aside.
You do not need to remove the other side
panel to replace the hardware listed in this guide.
Replacing the Side Panel
1 Align the notches inside
the side panel with the
holes on the chassis
2 Slide the side panel
forward on the frame until
it locks into place, and
then tighten the
thumbscrews on the side
3 See "After Closing the PC"
on page 2.