ThinkPad Basic Dock- 90W... Completely re-designed for a new generation of ThinkPads, snap into the ThinkPad Basic Dock with and get connected to your Local Area Network/Internet and workplace accessories such as an external display, keyboard, mouse and printer so you can get more done faster. One of the docks USB ports also supports always-on mobile device charging, which means that you can charge your mobile phone or tablet, even when your notebook is away. Our unique physical alignment guarantees perfect notebook-dock alignment every time. Includes a ThinkPad 90W AC Power Adapter (Slim Tip)