Recording audio over USB – possibly very stupid question…

Hi All,
Sorry this is probably a totally stupid question, based on my very old school concepts of recording, but on that has been perplexing me for a while.
My desire is to record Audio and Midi in real time from two hardware sources via USB.
I have two hardware modules (a synth and drum machine) both have USB connectors which I have sent directly to my PC and hence DAW (Cubase). Both are work fine and send and receive data just as they would if I were using good old MIDI.
However, both companies (Access and Roland) say that you can record audio over USB. Great I’m thinking I can get more gear working without having to increase the size of my mixing desk i.e. sneak more gear in without it being that obvious. Also this would speed up workflow as currently I record to midi then have to re-record the audio (bounce to audio is not supported by these units apparently). But when I go into the setup for inputs I only see my sound card and no additional USB audio ins.
I can change the sound card settings to be those of the hardware connected (but only one or other obviously) and for the Roland have to change the project setup entirely hmm. This then does not give me the audio in’s for the other products.
Many years ago one of my first posts was why was audio not coming out of my midi jacks, I feel like I’m back to stage one again I’m either missing something so basic or my expectations have been somewhat over sold…….
Sorry this is probably a totally stupid question, based on my very old school concepts of recording, but on that has been perplexing me for a while.
My desire is to record Audio and Midi in real time from two hardware sources via USB.
I have two hardware modules (a synth and drum machine) both have USB connectors which I have sent directly to my PC and hence DAW (Cubase). Both are work fine and send and receive data just as they would if I were using good old MIDI.
However, both companies (Access and Roland) say that you can record audio over USB. Great I’m thinking I can get more gear working without having to increase the size of my mixing desk i.e. sneak more gear in without it being that obvious. Also this would speed up workflow as currently I record to midi then have to re-record the audio (bounce to audio is not supported by these units apparently). But when I go into the setup for inputs I only see my sound card and no additional USB audio ins.
I can change the sound card settings to be those of the hardware connected (but only one or other obviously) and for the Roland have to change the project setup entirely hmm. This then does not give me the audio in’s for the other products.
Many years ago one of my first posts was why was audio not coming out of my midi jacks, I feel like I’m back to stage one again I’m either missing something so basic or my expectations have been somewhat over sold…….