Dell Alienware 15 (Early 2015) - Manual (Page 35)

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 damaging the wireless card, do not place
any cables under it.
1 Align the notches on the wireless card with the tabs on the wireless-card
slot.
2 Slide the wireless-card at an angle into the wireless-card slot.
3 Connect the antenna cables to the wireless card.
A label at the tip of the antenna cables indicates color scheme for the
wireless card supported by your computer.
Connectors on the wireless card Antenna-cable sticker
color
Auxiliary White
Main Black
4 Press the other end of the wireless card down 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 to the system
board.
Post-requisites
Replace the base panel .
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