Lenovo ThinkPad 570E ThinkPad 570 User's Reference - Page 111

Extending features: UltraBase Security features of the UltraBase The lock at the bottom of the UltraBase has three positions. Choosing the lock position, you can secure the devices in the bay, your computer, or both. If you attach a mechanical lock to the security keyhole of the UltraBase, the UltraBase lock position cannot be changed. Using the security screw and mechanical lock with the UltraBase lock, you can efficiently secure your whole system. You need to purchase the mechanical lock on the market. You are responsible for evaluating, selecting, and implementing the locking devices and security features. The three lock positions of the UltraBase lock are called (A), (B), and (C) in this user's reference. (A) Unlock position: If the lever is in this position, nothing is secured. (B) Bay lock position: If the lever is in this position, the UltraslimBay lock and the bay lock are locked. Although you can remove your computer from the UltraBase, you cannot remove a device from the UltraBase. (C) Full lock position: If the lever is in this position, not only are the UltraslimBay lock and the bay lock locked but also you cannot detach your computer from the UltraBase. Chapter 2. Using your computer and extending its features 95