Dell Inspiron 15 (5543, Early 2015) - Manual (Page 27)

Replacing 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.
Procedure
CAUTION: To avoid damage to the wireless card, do not place any
cables under it.
1 Align the notch on the wireless card with the tab on the wireless-card
slot and slide the card into the slot.
2 Align the screw hole on the wireless card with the screw hole on the
system board.
3 Connect the antenna cables to the wireless card.
4 Place the wireless-card bracket on the wireless card and align the screw
hole on the wireless-card bracket with the screw hole on the system
board.
5 Replace the screw that secures the wireless-card bracket and the
wireless card to the system board.
6 The following table provides the antenna-cable color scheme for the
wireless card supported by your computer:
Connectors on the wireless card Antenna-cable color
Main (white triangle) White
Auxiliary (black triangle) Black
Post-requisites
1 Replace the battery .
2 Replace the base cover .
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