Dell Alienware M17x R4 (Early 2012) - Manual (Page 27)

Removing the Graphics-Card Heat Sink Fan | 27
Procedure
1 Disconnect the graphics-card heat sink fan cable from the connector on the system
board.
2 Loosen the captive screws that secure the graphics-card heat sink fan to the chassis.
3 Lift the graphics-card heat sink fan along with the cable away from the computer
base.
1 graphics-card heat sink fan cable 2 captive screws (3)
3 graphics-card heat sink fan
1
2
3