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Chapter 3: CPU Installation and Removal
Pentium II (233 through 300MHz) and Pentium Pro Processors (150 through
200 MHz) can be used on the S1686S/D. Please refer to section 2.3 for the
correct CPU jumper settings. Although the S1686D motherboard is de-
signed as a dual CPU system, it will also function with a single CPU.
The S1686S/D board provides one or two slots for Pentium II Processors--
(Primary and Secondary Slots - (2nd only on S1686D)). If only one CPU
is used, the CPU should be plugged into the Primary Slot. However, when
two CPUs are used (S1686D), these CPUs should be of the same speed and
type.
Caution!! The CPU is a sensitive electronic component which can be easily
damaged by static electricity. Do not touch the CPU contacts with your fingers.
3.1 Installation of Pentium II Boxed (Active) Processors
(Note: Active Processors are equipped with cooling fans. When installing an
Active CPU, you also need to connect the cooling fan cable to its connector.)
Installing CPU Retention Modules
1. Installation of a Pentium II Active Processor requires a CPU Retention
Module, which is first secured onto the motherboard. (Refer to the
motherboard layout on Page 10.)
2. To attach the Retention Module, place the motherboard on a flat
surface.
3. Locate the key pin on one end of the Pentium II Slot on the board.
S1686S/D-001-02 http://www.tyan.com
Then carefully line up the key notch
on the Retention Module with the
key pin on the Pentium II Slot.
(The key pin on the Pentium II Slot
indicates the correct orientation of
the CPU.)
Pentium II Slot Connector
and Key Pin
18
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