HP OmniBook 5500 Notebook PC - Manual (Page 67)

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You can also change COM Port Assignments in the System Configuration utility.
Press FN+F2, and then click COM Ports from the Input/Output menu.
To specify serial port settings
Many applications provide a way for you to adjust the settings for serial ports they
use. Other applications don’t let you change serial port settings. However, you can
use Control Panel to set the basic serial port settings—the ones used by an
application that doesn’t change settings.
• Open Control Panel and double-click the Ports icon. Click the port you want to
set up, then set its parameters. For details, see the Windows Quick Start
manual.
To find out the port name for a particular serial connection, see the previous topic.
The changes you make to the advanced settings for a serial port should match your
hardware settings. The built-in advanced settings are listed below—you shouldn’t
use different settings in any applications.
• COM1: address 3F8 hex, interrupt 4.
• COM2: address 2F8 hex, interrupt 3.
• COM3: address 3E8 hex, interrupt 4.
• COM4: address 2E8 hex, interrupt 3.
Making Parallel Connections