User Guide

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