Lenovo B490 Laptop User Guide - Lenovo B490, B590, B43xx - Page 22
Specifications, RJ45 Ethernet connector
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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