System board connections
Refer to the following illustration and table to identify the system board connectors for your model.
No.
System Board Connector
System Board Label
Color
Component
1
PCI Express x1
X1PCIEXP3
white
Expansion Card
2
PCI Express x1
X1PCIEXP2
black
Expansion Card
3
PCI Express x1
X1PCIEXP1
black
Expansion Card
4
PCI Express x16
X16PCIEXP
black
Expansion Card
5
Parallel Port
PAR
black
Parallel Port
6
Serial Port
COMB
black
Serial Port
7
Hood Lock
HLCK
black
Hood Lock
8
Hood Sensor
HSENSE
white
Hood Sensor
9
DIMM4 (Channel A)
DIMM4
white
Memory Module
10
DIMM3 (Channel A)
DIMM3
black
Memory Module
11
DIMM2 (Channel B)
DIMM2
white
Memory Module
12
DIMM1 (Channel B)
DIMM1
black
Memory Module
13
Power
SATAPWR0
black
SATA Drives
14
Power
PWR
white
System Board
15
USB 3.0
FRONT USB3.0
blue
Front USB 3.0 Ports
16
SATA 3.0
SATA0
dark blue
Primary Hard Drive
17
SATA 3.0
SATA3
light blue
Any SATA Device other than the
Primary Hard Drive
50
Chapter 5 Removal and replacement procedures: Tower (TWR)