Installing the WWAN I/O board
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the WWAN I/O board and provides a visual representation of the installation procedure.
NOTE:The following steps are applicable only for 4G LTE enabled systems.
![Image: Removing the screws that secure the base cover to the palm-rest and keyboard assembly](https://dl.dell.com/content/guides/public/Html/latitude_3420_sm_discrete/images/GUID-260F180C-B915-4A26-9C50-EDB3938EF276-low.jpg)
Steps
- Connect the WWAN cable to the connector on the WWAN I/O board and close the latch.
- Gently flip the WWAN I/O board toward right.
- Align and place the WWAN I/O board into its slot on the palmrest assembly.
- Install the two (M2x3) screws to secure the WWAN I/O board to the palmrest assembly.
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