Renoise attempts to read the manufacturer names of the auxilary devices on the audio device driver. But if this area is not covered by the drivers, or not even being submitted that those devices exists, Renoise can’t fill in your auxilaries for you. This goes for your out-routing as well, are they working?
(check the mixer in the “out” row)
Soundblaster devices aren’t really designed to work with ASIO, even if the unofficial Kx drivers are better than the Creative’s original drivers, there is still no guarantee they work 100% well with audio-in devices.