Dell XPS 13 (9343, Early 2015) - Manual (Page 23)

Removing the Wireless Card
WARNING: Before working inside your computer, read the safety
information that shipped with your computer and follow the steps in
Before Working Inside Your Computer . After working inside your
computer, follow the instructions in After Working Inside Your
Computer . For more safety best practices, see the Regulatory
Compliance home page at dell.com/regulatory_compliance.
Prerequisites
1 Remove the base cover .
2 Remove the battery .
Procedure
1 Remove the screw that secures the wireless-card bracket to the system
board.
2 Lift the wireless-card bracket off the wireless card.
3 Disconnect the wireless-card cables from the wireless card.
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