System Board Features - NEC Express5800 120Ld User Manual

System Board Features

The system board (Figure 1-5) 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.
A. Primary processor connector
B. Not used
C. Secondary processor connector
D. Memory DIMM slots
E. Secondary VRM
F. Front panel LEDs connector
G. Power switch and Interlock switch connector
H. Not used
I. Management interface connector
J. Main power connector
K. Reset switch connector
L. Speaker connector
M. Diskette drive connector
N. IDE connector
O. Fan3 connector
P. External SCSI and media bays connector
Q.
Fan4 connector
R Internal SCSI HDD bay connector
S. Not used
T. Jumper block
U. Lithium backup battery
V. 64 bit, 66MHz PCI slots for add-in boards
W. 64 bit, 33MHz PCI slots for add-in boards
X. 32 bit, 33MHz PCI slots for add-in boards
Y. PCI/ISA shared slot for add-in board
Z. Fan connectors (Fan1, Fan2)
AA LAN RJ-45 network controller connector
BB SVGA monitor port connector
CC Parallel port connector
DD Mouse PS/2 compatible connector
EE Keyboard PS/2 compatible connector
FF Dump button (Reserved for debug only)
GG Serial port connectors (top COM 1, bottom COM2)
HH USB connectors (top USB 1, bottom USB 2)
Figure 1-5. System Board
System Overview 1-7