The 90W ThinkPad Pro Dock from Lenovo is a re-designed dock for the new generation ThinkPad. Snap into the ThinkPad Pro dock with an included ThinkPad AC adapter and get convenient access to power, the Local Area Network/Internet, and workplace accessories such as external displays, keyboards, mice, and printers for superior performance. One of the dock's USB ports also supports always-on mobile device charging, which means you can charge your mobile phone or tablet even when your notebook is away. NO LOCK