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• If you attach the ThinkPad Port Replicator Series 3, the ThinkPad Mini Dock Series 3, the ThinkPad Mini
Dock Plus Series 3, or the ThinkPad Mini Dock Plus Series 3 (170 W) to your computer, but do not connect
the ac power adapter of that attachment to the power jack, your computer goes into battery mode.
• If your computer and the ThinkPad Port Replicator Series 3, the ThinkPad Mini Dock Series 3, the
ThinkPad Mini Dock Plus Series 3, or the ThinkPad Mini Dock Plus Series 3 (170 W) are connected to
separate ac power adapters, your computer goes into battery mode rst, and then shifts into ac mode.
• If in either of the two preceding situations the battery of your computer is detached, or has no battery
charge, your computer shuts down.
Connecting an external display to the ThinkPad Mini Dock Plus Series 3 and the ThinkPad Mini
Dock Plus Series 3 (170 W)
Group 1 (top gure) and Group 2 (lower gure) are independent of each other. Each has a DisplayPort and a
digital visual interface. If you connect a display to a DisplayPort and a DVI that are in the same group, the
DisplayPort is inactive.
Chapter 7. Enhancing your computer 187