Disconnect the ac power adapter from the computer.
Start the computer and engage the BIOS.
Use the right arrow key to select the Configuration menu
then select Power and press Enter
then select “Disable Built-in Battery” and press enter.
Confirm that “yes” is selected and press enter to power down the system.
Place the unit upside down.
Remove seven screws from the bottom of the chassis.
Turn the system over, and open the cover.
Carefully unsnap the keyboard bezel assembly around the edges.
Disconnect the cable from the system board.
Disconnect the two antenna cables.
Remove the single retaining screw.
Pull the wireless WAN card from the connection.
Insert the wireless WAN card into the connection.
Install the single retaining screw.
Connect the red antenna cable to the jack labeled M or Main on the card.
Connect the blue antenna cable to the jack labeled A or Aux on the card.
Connect the keyboard cable to the system board.
Align the keyboard bezel assembly to the chassis.
Carefully press down along the edges to snap the bezel securely into place.
Close the cover, and turn the system over.
Install seven screws into the bottom of the chassis.
Connect the Power supply cable to the computer.
Turn on the computer to automatically enable the battery.
