SOYO SY-5SSM User's Manual & Technical Reference page 15

Hardware Setup
Those processors may come in various voltages on different
markets. Therefore, always make sure you know the type of the
CPU you are installing and adjust the settings on JP30 accordingly.
This Motherboard supports CPU voltages from 2.0 to 3.52V in 0.1V
increments. Use the following tables to set the CPU voltage jumpers
JP30 to match the voltage value of your CPU:
CPU Voltage Setting: JP30
Voltage Value
single3.5V*
single 3.3V
dual 3.2V
dual 3.1V
dual 3.0V
dual 2.9V
dual 2.8V
dual 2.7V
dual 2.6V
dual 2.5V
dual 2.4V
dual 2.3V
dual 2.2V
dual 2.1V
dual 2.0V
SY-5SSM & SY-5SSM/5 V1.1
1-2 3-4
open short short short short
open short short open short
open short short open open
open short open short short
open short open short Open
open short open open short
open short open open open
open open short short short
open open short short open
open open short open short
open open short open open
open open open short short
open open open short open
open open open open short
short short short short open
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5-6 7-8 9-10