Removal
Base Cover
Identify the base cover highlighted in blue.
Loosen the captive screws that secure the base cover to the computer.
Pry open the base cover starting from the bottom right corner of the base cover.
Lift the base cover starting from the bottom edge and push it towards the rear to remove it from the system.
WWAN Card
Identify the wireless module (WWAN) highlighted in blue.
Peel the sticker indicating the WWAN antenna cable connections.
Remove the screw that secures the WWAN card bracket to the system board.
Lift the WWAN card bracket from the WWAN card.
Disconnect the antenna cables from the connector on the WWAN card.
Slide and remove the WWAN card from its slot on the system board.
Install
WWAN Card
Identify the wireless module (WWAN) location highlighted in blue.
Align and slide the WWAN card to its slot on the system board.
Connect the white/grey to the ANT0 (A0).
Connect the orange to the ANT1 (A1).
Connect the blue to the ANT2 (A2).
Connect the black/grey to the ANT3 (A3).
Install the WWAN card bracket above the WWAN card to secure the antenna cables.
Install the screw that secures the WWAN card bracket to the system board.
Adhere the sticker indicating the WWAN antenna cable connections.
Base Cover
Identify the base cover location highlighted in blue.
Slide the base cover into its slot until it clicks into place.
Tighten the captive screws to secure the base cover to the computer.