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Hardware Upgrades; Serviceability Features; Warnings And Cautions - HP ProDesk 400 G1 Microtower Hardware Reference Manual

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2

Hardware upgrades

Serviceability features

The computer includes features that make it easy to upgrade and service. A Torx T15 or flathead
screwdriver is needed for many of the installation procedures described in this chapter.

Warnings and cautions

Before performing upgrades be sure to carefully read all of the applicable instructions, cautions, and
warnings in this guide.
WARNING!
Disconnect the power cord from the wall 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
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.
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Chapter 2 Hardware upgrades
To reduce the risk of personal injury from electrical shock, hot surfaces, or fire:
Energized and moving parts inside.
Static electricity can damage the electrical components of the computer or optional
Electrostatic discharge on page 40
for more

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