Intermec PB50 Installation Manual page 5

4 Using a small Phillips screwdriver, remove the two screws
from the connector cover on the back of the PB50 and save
the screws and the connector for a later use if necessary.
5 Insert the PB50 into the vehicle cradle and then pull out and
push back on the blue lever.
6 Press the PB50 into the vehicle cradle until you hear a click
and the printer is firmly connected to the vehicle cradle.