Dell Alienware Area 51 (Late 2009) - Manual (Page 11)

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CHAPTER 2: TECHNICAL OVERVIEW
1 12 V power connector (PWR1) 15 internal USB header (USB1)
2 CPU socket 16 internal USB header (USB2)
3 CPU-fan connector (CPUFAN1) 17 internal USB header (USB3)
4 memory-module connector (DIMM1) 18 IEEE 1394 header (1394_1)
5 memory-module connector (DIMM2) 19 S/PDIF header (SPDIF_IN)
6 memory-module connector (DIMM3) 20 front-panel audio connector
(FP_AUDIO)
7 main power connector (PWR2) 21 PCI card slot (PCI1)
8 IDE connector (IDE1) 22 PCI-Express x16 card slot
(PCI_E5)
9 SATA connectors (SATA 7 and SATA 8)
for optical drives
23 PCI-Express x1 card slot
(PCI_E4)
10 battery socket (BAT1) 24 PCI-Express x16 card slot
(PCI_E3)
11 SATA connectors (SATA 1-SATA 6) for
hard drives
25 PCI-Express x1 card slot
(PCI_E2)
12 password reset jumper (PASSWORD) 26 PCI-Express x16 card slot
(PCI_E1)
13 CMOS reset jumper (CLEAR_CMOS) 27 internal eSATA header
(SATA9)
14 front-panel connector (FP1)
System Board Components
1 2 3 4 5 6
7
8
9
11
10
12
13
14 15 16 17 18 19 20
21
22
23
24
25
26
27