Dell Alienware Area 51 (Late 2009) - Manual (Page 12)

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CHAPTER 2: TECHNICAL OVERVIEW
1 fan connector (FANCONN1)
2 PCI-fan connector (PCI_FAN1)
3 hard-drive fan connector (HDD_FAN2)
4 hard-drive fan connector (HDD_FAN1)
5 system-board USB header (MB_USB1)
6 bluetooth-module connector (BLUETOOTH)
7 wireless-module connector (WIRELESS)
Master I/O Board Components
1 2 3 4
5 6 7