SOYO SY-5EHM Super 7 User's Manual & Technical Reference page 36

Hardware Setup
5. Then choose [Save & Exit Setup] to re-boot your computer.
Step 17. Adjust the DIMM Voltage (JP37)
There are two kinds of DIMM voltages on the market: 3.3V and 5V
Most SDRAM DIMMs on the market feature a voltage value of 3.3V.
Set JP37 to the correct voltage value according to the DIMM
modules that you are using.
DIMM Voltage
JP37 Setting
Step 18. MULTI I/O ADDRESSES
Default settings for multi-I/O addresses are as follows:
Port
LPT1
COM1
COM2
Warning: If a default I/O address conflicts with other I/O
cards such as sound card, you must change one of the I/O
addresses to remedy to this address conflict. (I/O addresses
can be adjusted from the BIOS Setup Utility)
3.3V
(Default)
1 2
3 4
5 6
I/O Address
378H
3F8H
2F8H
33
SY-5EHM/5EH5
5V
Check DIMM voltage
carefully before setting the
jumper
1
3
5
IRQ
7 ECP + EPP
4
3
2
4
6
Status