Keylock Assembly and Override Blocker
The keylock assembly [1] and override blocker [2], located in the bottom
cover, work together to provide system security (Figure 6-16).
The keylock assembly mechanically locks the bottom and top cover of the
expansion base together and closes the keylock switch. When closed, the
keylock switch electronically disables the docking mechanism (to prevent
unauthorized docking and undocking of the computer).
When locking the expansion base, the keylock assembly moves the override
blocker to cover the manual eject override slot [3] to prevent unauthorized
manual ejecting of the computer (Figure 6-16).