User's Guide

System Overview 1-7
System Board Features
The system board (Figure 1-3) offers a “flat” design with the processor and memory
subsystems residing on the board. This figure shows the major components on the
system board. The following subsections describe the system board major components.
ABCDE
F G-2
H
I
J
KLMNOPQRS
T
U
G-1
A Rear serial port connector L Lithium battery
B Internal SCSI connector (connected to the
SCSI backplane)
M Front serial port connector
C ICMB connector N FDD/CDROM front panel connector
D PCI riser slots (For low-profile boards. 100
MHz/64-bit, 3.3V, PCI)
O Configuration jumper switch
E IPMB connector P Front panel USB connector
F DIMM sockets Q PCI riser card slot (For full-length boards,
100MHz/64-bit, 3.3V, PCI-X)
G Processor sockets. G-1 is Processor #1
(CPU #1); G-2 is Processor #2 (CPU #2).
R Hard disk drive access lamp pin header
H Processor power connector S Speaker
I System fan connector
T Jumper (J5A2)
J Main power connector
U Connectors for external devices
K Power signal connector
Figure 1-3. System Board