Hi Jeff
1 - You don't need com 2 - Guessing that Com1 is your serial port and Com3 is what FTDI picked
2 - For the Lynx Dongle you will Pick Enttec DMX USB PRO
Take a look at Bill's videos on setting up for the Lynx Dongle in the wiki. You are not allowed to view links.
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LoginIf you just using Vixen to see how it works I would not enable the dongle, especially if you don't have one yet.
See the attached pictures.
1 - Vixen No lights - Just using the adjustable preview to see how the show might look like
2 - Vixen Lights - Dongle connected along with a controller and lights
Hope that helps
Rick R.