SOYO SY-5S - Manual (Page 41)

Hardware Setup SY-5STM
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2-9 MULTI I/O ADDRESSES
Default settings for multi-I/O addresses are as follows:
Port I/O Address IRQ Status
LPT1 378H 7 ECP + EPP
COM1 3F8H 4
COM2 2F8H 3
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)
2-10 MAKING CONNECTIONS
For making case connections, attach the mainboard to case devices
by plugging flat cables and device cables to the connectors on the
mainboard.
Connect the mainboard to external peripheral devices such as PS/2
keyboard, parallel printer, PS/2 mouse … via the back panel
connectors.
(Refer to the "Quick Installation Guide" for directions on how to
make connections to the mainboard.)