Determining The Com Port - Toshiba M1 User Manual

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Exchanging data with another computer

Determining the COM port

Your modem is connected to one of the computer's COM
(communications) ports. The default setting for the modem is
COM3.
The following procedure is intended to support you if you
need to either upgrade your modem or reset the port to the
default settings.
If you're having trouble connecting through the modem, you
may need to determine the current COM port name and
possibly change it.
To find out which port your modem is connected to:
1 Click Start, then Control Panel.
Windows XP opens the Control Panel.
2 Double-click Phone and Modem Options.
Windows XP displays the Phone and Modem Options
Properties dialog box.
3 Click the Modems tab.
Your modem should be listed next to one of the computer's
COM ports.
4 Make a note of the COM port number.
5 To verify that the modem is set up properly, select the
modem you wish to check and then click Properties to
DEFINITION: Although the terms are often used
interchangeably, the serial port and COM port are really two
different things. The serial port is the physical port on the back
of the computer. The COM port is a unique identifier the
computer uses to communicate with the serial port or other
serial devices.