Specifications; Operating Environment - ThinkPad S440 User Manual

Wireless features
• Integrated wireless LAN
• Integrated Bluetooth
• NFC (on some models)
Security features
Fingerprint reader

Specifications

This section lists the physical specifications for your computer.
Size
• Width: 333 mm (13.11 inches)
• Depth: 225 mm (8.86 inches)
• Height: 21 mm to 23 mm (0.83 to 0.91 inch)
Heat output
45W (154 Btu/hr) maximum or 65 W (222 Btu/hr) maximum, depending on the model
Power source (ac power adapter)
• Sine-wave input at 50 to 60 Hz
• Input rating of the ac power adapter: 100 to 240 V ac, 50 to 60 Hz
Battery pack
Integrated lithium-ion (Li-Ion) battery pack
Battery status
To check the battery status, do the following:
• For Windows 7: Open the Power Manager program. Click the Battery tab. For instructions on how to
start the Access Connections™ program, see "Accessing Lenovo programs on the Windows 7 operating
system" on page 13.
• For Windows 8 and Windows 8.1: Press the Windows key to go to the Start screen. Click Lenovo
Settings ➙ Power.

Operating environment

This section provides information about your computer operating environment.
Environment:
• Maximum altitude without pressurization: 3048 m (10 000 ft)
• Temperature
– At altitudes up to 2438 m (8000 ft)
– Operating: 5.0°C to 35.0°C (41°F to 95°F)
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User Guide