IBM, Docking Station, models:

02K8668 - ThinkPad Port Replicator	User Manual
Dock I	User Manual
RDX	Manual
SelectaDock II	Hardware Maintenance Manual
ThinkPad Dock	User Manual
ThinkPad Dock II	User Manual
ThinkPad ThinkPad Mini Dock	User Manual
ThinkPad Ultrabay Plus	User Manual