1. Align the notch on the WWAN card with the tab on the WWAN-card slot and insert the WWAN card at an angle into theWWAN-card slot.2. Connect the antenna cables to the WWAN card and align the WWAN-card bracket on the WWAN card.3. Replace the screw (M2x2.5) that secures the WWAN bracket to the WWAN card.1. Install the battery.2. Install the base cover.3. Follow the procedure in After working inside your computer.TouchpadRemoving the touchpad1. Follow the procedure in Before working inside your computer.2. Remove the base cover.3. Remove the battery.The following image indicates the location of touchpad and provides a visual representation of the removal procedure.1. Peel the tapes that secure the touchpad to the palm-rest and keyboard assembly.2. Open the latch and disconnect the touchpad cable from the system board.3. Remove the three (M1.6x2) screws that secure the touchpad bracket to the palm-rest and keyboard assembly.4. Lift the touchpad bracket off the palm-rest and keyboard assembly.5. Remove the two (M1.6x2) screws that secure the touchpad to the palm-rest and keyboard assembly.6. Lift the touchpad, along with the cable, off the palm-rest and keyboard assembly.Installing the touchpadIf you are replacing a component, remove the existing component before performing the installation procedure.The following image indicates the location of touchpad and provides a visual representation of the installation procedure.1. Align and place the touchpad into the slot on the palm-rest and keyboard assembly.2. Replace the two (M1.6x2) screws that secure the touchpad to the palm-rest and keyboard assembly.3. Align and place the touchpad bracket into the slot on the palm-rest and keyboard assembly.4. Replace the three (M1.6x2) screws that secure the touchpad bracket to the palm-rest and keyboard assembly.5. Slide the touchpad cable into its connector on the system board and close the latch to secure the cable.6. Adhere the tape that secures the touchpad to the palm-rest and keyboard assembly.1. Install the battery.2. Install the base cover.3. Follow the procedure in After working inside your computer.Power-adapter portRemoving the power-adapter port1. Follow the procedure in Before working inside your computer.2. Remove the base cover.3. Remove the battery.The following image indicates the location of power-adapter port and provides a visual representation of the removal procedure.1. Disconnect the power-adapter port cable from the system board.2. Remove the screw (M2x3) that secures the power-adapter port to the palm-rest and keyboard assembly.3. Lift the power-adapter port, along with its cable, off the palm-rest and keyboard assembly.Removing and installing components 27