Dell Alienware Area 51 R2 (Late 2014) - Manual (Page 50)

2 Disconnect the cable that connects the left AlienFX side-panel connector
to the I/O board.
1 AlienFX side-panel
connector
2 left AlienFX side-panel
cable
3 I/O board
3 Turn the chassis over.
4 Remove the AlienFX side-panel cable through the routing holes.
5 Remove the screw that secures the left AlienFX side-panel connector
assembly to the chassis.
50