System Boards
3-7
Connector
Function
CN43
Feature connector
CN44
HDD activity indication from Add-on card (see
CN35)
CN45
Fan connector 1
CN46
Wake-on-LAN connector
CN47
Wide SCSI connector channel B
CN48
Wide SCSI connector channel A
CN49
Serial ports 1 (above) and 2 (below)
CN50
Backplane board connector (connects to CN10)
JP1
CPU 1 fan connector
JP10
CPU 2 fan connector
JP12
CPU 3 fan connector
JP13
CPU 4 fan connector
JP14
MIOC chipset fan connector
JP18
PXB U64 fan connector
JP21
Reserved
JP22
Reserved
JP23
Reserved (Right door intrusion connector)
3.1.3
Installing and Removing an Intel Pentium II
Xeon CPU
Intel’s Pentium II Xeon CPU is a Slot 2 processor that uses a 330-
contact connector which is a bit longer that a Slot 1 processor. Other
than the size, the major improvement of the Slot 2 processor is at the
L2 cache. Pentium II Xeon processors access the L2 cache at full
clock speed, 400 MHz or 450 MHz, whereas a Slot 1 processor
accesses the L2 at only half the CPU’s clock speed. Thus, Slot 2
processor significantly boost performance and speed. Here are some
of the other features of the Pentium II Xeon processor:
•
0.25 micron P6 microarchitecture core