NEC VERSA DOCK Manual page 29

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3. Verify that the keylock switch is in the "Normal" position.
4. Close the LCD panel on the NEC Versa.
5. Slide the NEC Versa onto the NEC Versa Dock. Ensure that the
three locking teeth on the NEC Versa Dock fit into the three locking
slots on the bottom of the NEC Versa.
2-8 Docking and Undocking
If you have an NEC Versa SX, set the lever to II by sliding the
lever to the rear.
Keylock switch in the Normal position
Locating the locking teeth