Dell Alienware M14x R2 (Early 2012) - Manual (Page 45)

3 Slide and remove the mini-card out of the connector on the system board.
Replacing the Mini-Card(s)
Procedure
1 Remove the new Mini-Card from its packaging.
CAUTION: Use firm and even pressure to slide the mini-card into place. If you use
excessive force, you may damage the connector.
CAUTION: The connectors are keyed to ensure correct insertion. If you feel
resistance, check the connectors on the mini-card and on the system board, and
realign the mini-card.
2 Insert the mini-card connector at a 45-degree angle into the connector on
the system board.
3 Press the other end of the mini-card down into the slot on the
system board and replace the screw that secures the mini-card to
the system board.
Wireless Mini-Card(s) 47