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rechargeable Lithium-Ion batteries completely discharge or store these batteries in a discharged state.

Heat and product ventilation

Computers, AC adapters, and many accessories can generate heat when turned on and when batteries are

charging. Always follow these basic precautions:

• Do not leave your computer, AC adapter, or accessories in contact with your lap or any part of your body

for an extended period when the products are functioning or when the battery is charging. Your computer,

AC adapter, and many accessories produce some heat during normal operation. Extended contact with the

body could cause discomfort or, potentially, a skin burn.

• Do not charge the battery or operate your computer, AC adapter, or accessories near ﬂammable materials

or in explosive environments.

• Ventilation slots, fans, and heat sinks are provided with the product for safety, comfort, and reliable

operation. These features might inadvertently become blocked by placing the product on a bed, sofa,

carpet, or other ﬂexible surface. Never block, cover, or disable these features.

Inspect your desktop computer for dust accumulation at least once every three months. Before inspecting your

computer, turn off the power and unplug the computer's power cord from the electrical outlet; then remove

any dust from vents and perforations in the bezel. If you notice external dust accumulation, then examine and

remove dust from the inside of the computer including heat sink inlet ﬁns, power supply vents, and fans. Always

turn off and unplug the computer before opening the cover. If possible, avoid operating your computer within

2 feet of high-trafﬁc areas. If you must operate your computer in or near a high-trafﬁc area, inspect and, if

necessary, clean your computer more frequently.

For your safety and to maintain optimum computer performance, always follow these basic precautions with

your desktop computer:

• Keep the cover closed whenever the computer is plugged in.

• Regularly inspect the outside of the computer for dust accumulation.

• Remove dust from vents and any perforations in the bezel. More frequent cleanings might be required for

computers in dusty or high-trafﬁc areas.

• Do not restrict or block any ventilation openings.

• Do not store or operate your computer inside furniture, as this might increase the risk of overheating.

• Airﬂow temperatures into the computer should not exceed 35° C (95° F).

• Do not use non-desktop air ﬁltration devices.

Operating environment

The optimal environment in which to use your computer is 10°C-35°C (50°F-95°F) with humidity ranging

between 35% and 80%. If your computer is stored or transported in temperatures less than 10°C (50°F), allow

the cold computer to rise slowly to an optimal operating temperature of 10°C-35°C (50°F-95°F) before use.

This process could take two hours in extreme conditions. Failure to allow your computer to rise to an optimal

operating temperature before use could result in irreparable damage to your computer.

If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine.

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Safety and warranty guide

2007.8.20 4:07:37 PM