IBM ThinkPad Dock User Manual page 14

ThinkPad Dock II
(1) The LAN Wake connector is where you connect the Wake on LAN cable if
you install the PCI card with the Wake on LAN function.
(2) By setting the PC Card lock to the locked position, you can secure the PC
Card.
(3) When you set the bay device lock to the locked position, the bay latch is
locked to secure the device in the Ultrabay 2000.
8
ThinkPad Dock, ThinkPad Dock II: User's Guide