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2.3 Installation procedures
2.3.1 Processor (J16 and FAN)
The motherboard supports single Pentium
®
II processor. The processor’s VID pins automatically
program the voltage regulator on the motherboard to the required processor voltage. The
motherboard currently supports processors that run internally from 233 MHz to 333 MHz.
The Pentium ® II processor is packaged in a Single Edged Contact (S.E.C.) cartridge. The
cartridge includes the processor core, second-level cache, thermal plate and back cover. The
processor connects to the motherboard through the Slot 1 connector, a 242-pin edge connector.
When mounted in a Slot 1 connector, the processor is secured by a retention mechanism attached
to the motherboard.
First, screw the main body of Slot 1 retention mechanism to the motherboard then insert the
processor cartridge along the retention mechanism in vertical direction. A “click” sound will be
heard while the processor is located right in position. Finally, attach the cooler’s power cable to
the processor fan header on the motherboard.
Signal of FAN header (processor fan header)
Pin 3
Ground
Pin 2
+12 V
Pin 1
SENSE
Note 1. Processor cooler is always required to prevent over-heat.
Note 2. The second-level cache is located on the substrate of the S.E.C. cartridge. The cache size
and cacheable memory size are dependent on the processor used.
2.3.2 Processor frequency Selection (JP1)
JP1 is a 2x6-pin jumper block with Easy-jumper cap on it for you to select the processor’s
working speed easily.
233
266
300
333
RS0 RS1 Processor
ON
OFF OFF OFF OFF OFF For Pentium ® II 233 MHz
OFF ON
OFF OFF OFF OFF For Pentium ® II 266 MHz
OFF OFF ON
OFF OFF OFF For Pentium ® II 300 MHz
OFF OFF OFF ON
OFF OFF For Pentium ® II 333 MHz
Note: This jumper is able to provide more powerful functions, which are reserved for
technician’s special testing purpose only. DO NOT use these functions unless you are an
experienced user and you are willing to take your risk.
