Dell Alienware Area 51 R2 (Late 2014) - Manual (Page 18)

7 PCI-Express x16 slot (SLOT3) 8 M.2 connector (wireless card)
9 coin-cell battery socket (BAT1) 10 CMOS reset jumper (CLEAR
CMOS1)
11 PCI-Express x4 slot (SLOT4) 12 Thunderbolt connector (TBT1)
13 PCI-Express x16 slot (SLOT5) 14 Serial Peripheral Interface
connector (SP11)
15 PCI-fan connector (SIDE_FAN1) 16 drive-bay heat-sensor
connector (SENSOR1)
17 chassis heat-sensor connector
(SENSOR2) 18 PCI-Express power connector
(PCIE_PWR1)
19 PCI-Express fan 1 connector
(PCI_FAN1) 20 SATA drive connectors
21 USB connector (USB1) 22 LED Power Switch (PANEL1)
23 USB connector (USB3_MB1) 24 Advanced Technology xTended
(ATX) power connector (ATX
PWR1)
25 processor socket (CPU1) 26 memory-module slot (DIMM3)
27 memory-module slot (DIMM4) 28 processor liquid-cooling
assembly fan connector
(MID_FAN1)
29 memory fan connector
(TOP_FAN1) 30 processor-power connector
(CPU PWR1)
31 processor liquid-cooling assembly
pump-fan connector
(PUMP_FAN1) 32 memory-module slot (DIMM2)
33 memory-module slot (DIMM1)
I/O Board Components
NOTE: The location of the connectors may vary based on the selections
you made at the time of purchase.
18