Thanks again peterB
Yes, the printer device driver and software is installed.
Once plugged in, using the printer software on the guest, we manually assign the port to use, in our case I did verify it has to be COM1 or COM2. The printer software comes back and tells us, that COM1 and COM2 are already in use and to select another port. We can successfully select COM3, 4, 5, etc and the printer software accepts it. The problem is, the application that works with the printer will only use COM1 or COM2.
For our testing the servers and clients are all on the same LAN, 1000 MB,