User's Manual Part 2

Setup Configuration Utility (SCU)
5-10
COM Ports
Allows you to configure the COM ports of the computer.
COM1/2/3/4 Settings sets the I/O (Input/Output) address and the
Interrupt ReQuest line (IRQ) settings of the COM ports. The options
are Disabled; COM1, 3F8, IRQ4; COM2, 2F8, IRQ3; COM3, 3E8,
IRQ6; COM4, 2E8, IRQ11.
Mode Setting for COM2 sets the communication compatibility
mode according to the type of the IR device to be connected. The
options are IrDA (HPSIR) and Fast IR. The default setting is Fast IR.
This item is not valid for setting if the COM1/2/3/4 Settings item is
set to Disabled.
DMA Setting For Fast IR sets the DMA (Direct Memory Access)
channel of the IR port in Fast IR mode. The options are DMA 0,
DMA 1, and DMA 3. Default setting is DMA 0. This item is not valid
for setting if the Mode Setting for COM2 item is set to IrDA
(HPSIR).