System Board Features - NEC EXPRESS5800/120Lf User Manual

System Board Features

The system board (Figure 1-6) 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.
II
HH
GG
FF
EE
DD
CC
BB
AA
Z
Y
A Rear exhaust fan connectors (fan5 and fan6)
B Main power connector
C Auxiliary power connector
D CPU1 fan connector
E Primary processor connector (CPU1)
F Secondary processor connector (CPU2)
G CPU +12 Volt power connector
H Memory DIMM slots
I USB connector (front panel)
J Diskette drive connector
K IDE CD-ROM connector
L Front intake fan connectors (fan3 and fan4)
M Hot swap backplane connectors
N Front panel connector
O System configuration jumper block
P Processor speed jumper block
Q HDD LED connector
R Configuration jumper block
B
D
A
E
C
X
Figure 1-6. System Board
F H
G
W
U
V
S Lithium backup battery
T Buzzer
U Media bay or external SCSI connector (SCSI B)
V Serial COM 2 connector
W Internal SCSI HDD bay connector (SCSI A)
X Intrusion switch connector
Y 64 bit, 66MHz PCI slots for add-in boards
Z 32 bit, 33MHz PCI slots for add-in boards
AA ICMB connector
BB 64 bit, 66MHz PCI slots for add-in boards
CC CPU2 fan connector
DD LAN RJ-45 network controller connectors
EE VGA monitor port connector
FF Parallel port connector
GG Serial port connector (COM 1)
HH Stacked three-port USB connectors
II Dual PS/2 keyboard and mouse connectors (top mouse,
bottom keyboard)
I
J
K
L
M
N
O
P
Q
R
S
T
System Overview 1-9