Part/Model Number: ThinkPad Ultra Dock 40A2 / 40A20170UK / 40A2017-0UK / 04W3947 / 00HM917 / SD20A06037 / SD20F82750 / 00HM917. ThinkPad W540. ThinkPad W541. The ultimate 170W docking solution, the ThinkPad Ultra Dock 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.
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