Lenovo ThinkPad i Series 1157 ThinkPad 570 User's Reference - Page 124

Extending features: UltraBase and Port Replicator with Advanced EtherJet Feature Security features when using the Port Replicator with Advanced EtherJet Feature If you are using the Port Replicator with Advanced EtherJet Feature through the UltraBase, you achieve the same security features when attaching the mechanical lock to the security keyhole of the port replicator. With the mechanical lock, you can secure your port replicator and the UltraBase. Attach the mechanical lock to the first security system lock of the Port Replicator with Advanced EtherJet Feature . For more information replicator. the manual shipped with the port You need to purchase the mechanical lock on the market. You are responsible for evaluating, selecting, and implementing the locking devices and security features. After setting the UltraBase lock to the either lock position, insert the security plate in the security keyhole of the UltraBase as follows: 108 IBM ThinkPad 570 User's Reference