The most compelling reason to go with the ThinkPad Dock II would be to get the Ultrabay 2000 device bay and the half-height PCI slot. If you dont need either, then the Port Replicator II or Mini-Dock ...
This is a new problem which has only just started to happen. When the thinkpad is in the docking station all the attached devices (keyboard, mouse, monitor etc) on the docking station function ...