You're good Mitch! I was unaware that the USB cable was used for anything other than the initial setup of the RRC. I didn't realize that the USB cable must remain plugged in after the RRC has been configured.
As soon as I plugged the USB cable from the Control (K3/0) RRC into my PC USB port, the Windows Device Manager immediately displayed all the RRC virtual COM ports, including the COMFSK port.
Thanks again and also thank you for sending the checklist - I haven't had a chance to do anything with it yet but should be able to proceed with the Internet configuration tomorrow.
73 and KB!
Ron N6EE