16 HardwareSetupMulti I/O Port Addresses
Default settings for multi I/O port addresses are shown in the table
below.
Port I/O Address IRQ Status
LPT1*
378H 7 ECP + EPP
COM1
3F8H 4
COM2
2F8H 3
* If default I/O port addresses conflict with other I/O card (e.g. sound
cards or I/O cards), you must adjust one of the I/O addresses to avoid
address conflict. (You can adjust these I/O addresses from the BIOS
setup.)
Note: Some sound cards have a default IRQ setting for IRQ7, which may
conflict with printing functions. If this occurs do not use sound card
functions at the same time you print.

Connectors

Attach the mainboard to case devices via connectors on the mainboard.
Refer to Figure 1-1 for connector locations and connector pin positions.

PW – ATX Power Supply On/Off Switch Connector

(Momentary type)

Attach a two-pin switch to this connector for turning the ATX power
supply on/off.

COM1, COM2 – COM1/COM2 Connectors

Attach COM1/COM2 device to these connectors.