Dell XPS 15 (L501X, Late 2010) - Manual (Page 80)

80 Internal Card With Bluetooth Wireless Technology
10 Disconnect the Bluetooth-card cable from the connector on the system
board.
11 Lift the Bluetooth card from the slot on the top cover.
Replacing the Bluetooth Card
1 Follow the instructions in "Before You Begin" on page 9.
2 Slide the Bluetooth card into the slot on the top cover.
3 Connect the Bluetooth-card cable to the connector on the system board.
4 Follow the instructions from step 9 to step 12 in "Replacing the Top
Cover" on page 69.
1 Bluetooth-card cable connector 2 Bluetooth card
3 Bluetooth card slot 4 Bluetooth-card cable
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