Specifications - Lenovo ThinkPad T420 4236 User Manual

• Speaker mute button
• Microphone mute button
Interface
• External monitor connectors (VGA and DisplayPort)
• Combo audio jack (stereo headphone or headset)
• 2 Universal Serial Bus (USB) connectors
• 1 Always On USB connector
• 1 eSATA/Universal Serial Bus (USB) connector (on some models)
• IEEE 1394 connector (on some models)
• RJ11 Modem connector (on some models)
• RJ45 Ethernet connector
• Serial Ultrabay enhanced
• ExpressCard slot
• 4-in-1 digital media card reader (SD/SDHC/SDXC/MMC)
• Smart card reader (on some models)
• Docking connector
Optical drive
• Multi-Burner drive
Wireless features
• Integrated wireless LAN
• Integrated Bluetooth (on some models)
• Integrated wireless WAN (on some models)
• Integrated WiMAX (on some models)
Security features
• Fingerprint reader (on some models)

Specifications

Size
• Width: 340.5 mm (13.4 inch)
• Depth: 233 mm (9.05 inch)
• Height: 30.1 to 30.5 mm (1.18 to 1.20 inch)
Heat output
• 65 W (222 Btu/hr) maximum, 90 W (307 Btu/hr) maximum, 135 W (460 Btu/hr) maximum, or 170 W
(580 Btu/hr) maximum (depending on the model)
Power source (AC adapter)
• Sine-wave input at 50 to 60 Hz
• Input rating of the AC adapter: 100 to 240 V AC, 50 to 60 Hz
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Chapter 1 Product Overview