Lenovo ThinkPad i Series 1157 ThinkPad 570 User's Reference - Page 130

Extending features: UltraBase and ThinkPad 560 Port Replicator Docking the computer to the UltraBase-ThinkPad 560 Port Replicator assembly If you operate the computer by ac power, switch the plug of the AC Adapter from the computer to the UltraBase before the attachment. The AC Adapter connector will be damaged if it remains connected to the computer. Hot-docking Warm-docking Condition when docking The computer is operating. The computer is in suspend mode. (When you attach the computer, the system resumes and starts processing for docking.) Sign for successful docking The status indicator of the UltraBase is on. To attach the UltraBase to the ThinkPad 560 Port Replicator, align one of the docking connectors of the UltraBase with the one of the port replicator; then put the UltraBase in place. To attach the computer to the UltraBase-ThinkPad 560 Port Replicator the attachment procedure for the computer and the UltraBase on page 92. 114 IBM ThinkPad 570 User's Reference