Place the unit upside down. Slide the battery latches to the unlocked position. Slide the battery pack toward the back of the machine, and out of the slot. Locate the SIM card slot inside the battery compartment. Gently pull the card out of the slot. Remove the two retaining screws. Slide the cover toward the front of the machine. Lift the cover from the chassis. Disconnect the two antenna cables. Remove the single retaining screw to raise the card. Pull the wireless LAN card from the connection. Insert the wireless LAN card into the connection. Install the single retaining screw. Connect the grey antenna cable to the jack labeled Main. Connect the black antenna cable to the jack labeled Auxiliary. Using the clips, align the cover on the bottom of the system. Slide the cover toward the back of the system until it stops. Replace the two retaining screws. Align and insert the SIM card into the slot. Slide the battery into position until it locks into place.
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