alpha tags bcd996xt

I have 2 Uniden BCD996XT and I want to provide Alpha Tags to both. It's not giving me an option to use a com port. It click on the down arrow and it says "None". One the first scanner i'm using Front Mic/ Real Tec High Definition. And the second scanner I'm using Sound Blaster X-Fi How do I...

Hello, Thanks in advance to everyone who reads and or comments back. I recently activated an online feed. I have a BCD 996XT. I am having difficulty with the alpha tags not communicating with the scanner. It says not communicating with scanner, to communicating with scanner. I have...