An available COM port is a serial communications port that is not used by any other program, and is recognized by the Windows Operating System. This may include COM ports native to the motherboard, COM ports from an Add-On board (or multi-port serial board), or COM ports implemented via a USB Adapter cable.
A COM Port can be easily recognized by looking for a 9 Pin Male connector on the back of your PC as pictured below.
How do I know if the connector I found is actually a COM port, and that it is functioning?
| Try downloading our FREE Pre-Install Utility from our web site. This program will test you PC for COM ports, identify them, and assist you in the installation process.
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