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