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Step 1
Your Raptor MicroATX is equipped with a large number of
peripherals. As such, there are a large number of configuration jumpers
on the board. Taken step by step, setting these jumpers is easy. We
suggest you review each section and follow the instructions.
The Raptor Micro ATX has the ability to run at a
variety of speeds without the need to change any
crystal, oscillator or jumper.
Jumper Types
Jumpers are small copper pins attached to the system board. Covering
two pins with a shunt closes the connection between them. The Raptor
MicroATX examines these jumpers to determine specific configuration
information. There are two different categories of jumpers on the
Raptor MicroATX.
A. Two pin jumpers are used for binary selections such as enable,
disable. Instructions for this type of jumper are open, for no shunt over
the pins or closed, when the shunt covers the pins.
B. Three or four pin jumpers are used for multiple selections.
Instructions for these jumpers will indicate which two pins to cover.
For example: for JPx 2-3 the shunt will be covering pins 2 and 3
leaving pins 1 and 4 exposed.
Some jumpers are actually a set of micro-switches. Moving the micro-
switch to the position assigned "ON" will have the same effect as
closing a regular jumper.
How to identify pin number 1 on Figure 1-1: Looking to the solder side
(The board side without components) of the PCB (Printed Circuit
Board), pin number 1 will have a squared pad
a circular pad
. They are numbered sequentially.
Setting the Jumpers
Special note about operating frequency:
Chapter 1: Pre-Configuration
. Other pins will have
3
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