This dialog lets you see all the ports on your machine and you can select the one you wish to use. The bottom half shows more details about the selected port.
Note that only ports listed as available will actually be usable by BitPim. Other ports may be in use by other programs (such as Palm HotSync or ActiveSync). They may also be switched off for the moment. For example, if you have a USB to serial cable and it is not plugged in, then the port details will show up, but it will be listed as not active. Plugging the cable in will make it active.
BitPim Online Help built 17 January 2010