Lenovo B590 Notebook - Manual (Page 22)

Keyboard
• 6-row Lenovo keyboard
• Recovery button
Interface
• Combo audio jack
• USB 2.0 connectors
• USB 3.0 connectors
• RJ45 Ethernet connector
• HDMI connector
• External monitor connector
• 4-in-1 digital media card reader slot
Optical drive
• 12.7 mm Rambo optical drive (on some models)
Wireless features
• Integrated wireless LAN
• Integrated WiMAX
• 100/1000Mbps Ethernet communication
Specifications
This topic lists the physical specifications for your computer.
Heat output
• 65 W (222 Btu/hr) or 90 W (307 Btu/hr) maximum heat output (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
• Lithium-ion (Li-Ion) battery pack
8 User Guide