Windows XP Professional or Windows Server 2003/2003 R2
Click the [Start] button, and then click [Printers and Faxes].
Click the icon of the printer. On the [File] menu, click [Properties].
Click the [Ports] tab.
In the [Print to the following port(s)] list, confirm the correct port is selected.
Windows XP Home Edition
Click the [Start] button, and then click [Control Panel].
Click [Printers and Other Hardware].
Click [Printers and Faxes].
Click the icon of the printer. On the [File] menu, click [Properties].
Click the [Ports] tab.
In the [Print to the following port(s)] list, confirm the correct port is selected.
Windows Vista or Windows Server 2008
Click the [Start] button, and then click [Control Panel].
Click [Printer].
Click the icon of the printer. On the [File] menu, click [Properties].
Click the [Ports] tab.
In the [Print to the following port(s)] list, confirm the correct port is selected.
Windows 7 or Windows Server 2008 R2
Click the [Start] button, and then click [Devices and Printers].
Right-click the printer icon you want to check, and then click [Printer Properties].
Click the [Ports] tab.
In the [Print to the following port(s)] list, confirm the correct port is selected.