Can I Use A Extreme?

I’m using A Express no prob but Roon does not detect my Extreme, should it ?

Use an Apple Extreme for what? A router or are you using one of their Time Capsules? If the former I have two Apple Extreme Routers and they work great with Roon. Both PCs and Macs.

Airport Express and Apple TV are audio endpoints; the Airport Extreme is not…

As a router, I was using an Express optical out to my DAC, Roon found it easily, but I have replaced it with the extreme and wanted to see if I could USB instead to the DAC, but according to VirusKiller it’s not an end point.