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Lenovo ThinkPad A275 User Manual page 29

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Computer specifications
Size
• Width: 305.5 mm (12 inches)
• Depth: 208.5 mm (8.2 inches)
• Thickness: 20.3 mm (0.8 inches)
Maximum heat output (depending on the model)
• 45 W (154 Btu/hr)
• 65 W (222 Btu/hr)
Power source (ac power adapter)
• Sine-wave input at 50 Hz to 60 Hz
• Input rating of the ac power adapter: 100 V to 240 V ac, 50 Hz to 60 Hz
Operating environment
Maximum altitude (without pressurization)
• 3048 m (10 000 ft)
Temperature
• At altitudes up to 2438 m (8000 ft)
– Operating: 5°C to 35°C (41°F to 95°F)
– Storage: 5°C to 43°C (41°F to 109°F)
• At altitudes above 2438 m (8000 ft)
– Maximum temperature when operating under the unpressurized condition: 31.3°C (88°F)
Note: When you charge the battery, its temperature must be at least 10°C (50°F).
Relative humidity
• Operating: 8% to 95% at wet-bulb temperature 23°C (73°F)
• Storage: 5% to 95% at wet-bulb temperature 27°C (81°F)
If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine.
Attention:
• Keep electrical appliances such as electric fans, radio, air conditioners, and microwave ovens away from
the computer. The strong magnetic fields generated by these appliances can damage the monitor and
data on the internal storage drive.
• Do not place any beverages on top of or beside the computer or other attached devices. If liquid is spilled
on or in the computer or an attached device, a short circuit or other damage might occur.
• Do not eat or smoke over your keyboard. Particles that fall into your keyboard can cause damage.
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Chapter 1
Product overview
11

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