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Hardware Upgrades

The computer includes features that make it easy to upgrade and service. No tools are needed for most

of the installation procedures described in this chapter.

Before performing upgrades be sure to carefully read all of the applicable instructions, cautions, and

warnings in this guide.

WARNING!

surfaces, or fire:

Disconnect the power cord from the power outlet and allow the internal system components to cool

before touching.

Do not plug telecommunications or telephone connectors into the network interface controller (NIC)

receptacles.

Do not disable the power cord grounding plug. The grounding plug is an important safety feature.

Plug the power cord in a grounded (earthed) outlet that is easily accessible at all times.

To reduce the risk of serious injury, read the Safety & Comfort Guide. It describes proper workstation,

setup, posture, and health and work habits for computer users, and provides important electrical and

mechanical safety information. This guide is located on the Web at http://www.hp.com/ergo.

WARNING!

Disconnect power to the equipment before removing the enclosure.

Replace and secure the enclosure before re-energizing the equipment.

CAUTION:

equipment. Before beginning these procedures, ensure that you are discharged of static electricity by

briefly touching a grounded metal object. See Appendix D,

more information.

When the computer is plugged into an AC power source, voltage is always applied to the system board.

You must disconnect the power cord from the power source before opening the computer to prevent

damage to internal components.

ENWW

To reduce the risk of personal injury or equipment damage from electrical shock, hot

Energized and moving parts inside.

Static electricity can damage the electrical components of the computer or optional

Electrostatic Discharge on page 38

Serviceability Features

for