Lenovo ThinkPad T540p - Manual (Page 29)

GPS and wireless features
• Global Positioning System (GPS) satellite receiver (on some models)
• Bluetooth
• Wireless LAN
• Wireless WAN (on some models)
• NFC (on some models)
Security features
• Fingerprint reader (on some models)
Specifications
This section lists the physical specifications for your computer.
Size
• For T540p models:
– Width: 376.6 mm (14.83 inches)
– Depth: 248.1 mm (9.77 inches)
– Height: 27.9 to 29.5 mm (1.10 inches to 1.16 inches) or 29.9 to 33.9 mm (1.18 inches to 1.33 inches)
• For W540 models:
– Width: 376.6 mm (14.83 inches)
– Depth: 248.1 mm (9.77 inches)
– Height: 27.9 to 29.5 mm (1.10 inches to 1.16 inches)
Heat output (depending on the model)
• 65 W (222 Btu/hr) maximum
• 90 W (307 Btu/hr) maximum
• 135 W (460 Btu/hr) maximum
• 170 W (580 Btu/hr) maximum
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 life
• For the percentage of the battery power remaining, check the battery status icon in the Windows
notification area.
Operating environment
This section provides information about the operating environment of your computer.
Environment:
• Maximum altitude without pressurization: 3048 m (10 000 ft)
• Temperature
Chapter 1 . Product overview 13