Technical Reference
Dual-Core Intel® Xeon® Processor LV and Intel
®
3100 Chipset
User’s Manual
January 2007
40
Order Number:315879-002
3.6
Connectors
Warning:
Only the following connectors have over-current protection: back panel USB, front
panel USB, and PS/2* connector.
The other internal connectors are not over-current protected and should connect only
to devices inside the computer’s chassis, such as fans and internal peripherals. Do not
use these connectors to power devices external to the computer’s chassis. A fault in the
load presented by the external devices can damage the computer, the power cable, and
the external devices.
This section describes the connectors. The connectors can be
divided into these groups:
• Back panel connectors
• Component side connectors
3.6.1
Back Panel Connectors
Figure 30
shows the location of the back panel connectors for the CRB.
3.6.2
Component Side Connectors
Table 11.
PCI Interrupt Routing Map PCI Interrupt Source
Intel
®
3100 Chipset PIRQ Signal Name
PIRQA# PIRQB# PIRQC# PIRQD#
PCI bus connector 1
INTA
INTB
INTC
INTD
Figure 30.
Back Panel Connectors
Table 12.
Front Chassis Fan and Rear Chassis Fan Connectors
Pin
Connector
1
Control
2
+12 V
3
Tach
B5787-01
Mouse
Keyboard
Parallel Port
Serial com
Port 1
USB Ports (2)
2 = Top
3 = Bottom
Serial com
Port 2
USB Ports (2)
0 = Top
1 = Bottom
15-pin VGA on-
Board Video