With the horsepower to drive mobile workstations, the completely re-designed and supercharged ThinkPad Ultra Dock with an included ThinkPad 170W AC Adapter grows capability without growing in size. The ultimate docking solution includes a wide range of video outputs, including HDMI 1.4, and support for multiple external monitors so you can multi-task like never before.Features and Benefits:   •  3x USB 2.0, one supports always-on USB charging   •  3x USB 3.0   •  10/1000 Gigabit Ethernet, supports enterprise manageability   •  2x DisplayPort 1.2*   •  1x DVI-D*   •  1x HDMI 1.4*   •  1x VGA*   •  1x Stereo/Mic Combo Audio Port   •  Driver-free, perfect video quality   •  Security Lock conveniently secures both your notebook and dock to your desk with a single key   •  Physical rear alignment for a perfect dock every time   •  Smaller desktop footprint vs. Series 3 docking stations   •  Charges your ThinkPad with an included ThinkPad 170W AC Adapter Note: *ThinkPad Ultra dock is capable to support up to 4k2k(3840x2160)@60Hz via either 1 of 2 DP ports, or support dual 4k2k@30Hz via 2 DP ports. Actual video output on the dock is based on system video performance since the video signal is passing through from system to the Ultra dock. Some of the video ports do have exclusive use and are also dependent on the docked ThinkPad configuration. For detailed information please visit Display and Video Output Configurations