Lenovo B50-45 User Guide - Lenovo B40-xx, B50-xx, B50-30 Touch Notebook - Page 12

Chapter 1. Getting to know your computer Left-side view  B40-30/N40-30/B40-70/N40-70/B40-45/N40-45/B50-30/B50-30 Touch/B50-45/N50-45 1 3  B50-70/N50-70 4 5 6 7 12 3 4 5 6 7 a AC power adapter jack Connects the AC power adapter. b Lenovo OneLink connector (on select models) When the AC power adapter is connected to the AC power adapter jack, it provides power to the computer and charges the battery. When a supported ThinkPad OneLink Dock is connected to the Lenovo OneLink connector, it can not only extend the computer capabilities, but also provide AC power to the computer and charge the battery. To use the Lenovo OneLink connector, you need to remove the connector cover from the Lenovo OneLink connector first. Note: Ensure that you keep the connector cover. Reattach it to the Lenovo OneLink connector when you are not using the Lenovo OneLink connector. c Ventilation slots Dissipates internal heat. 6