thanks. yeah, I will test it. Actually I tried something similar one year ago with much better external audio card, desktop computer and a keyboard but I lost in all the functions, and I failed to connect it correctly and couldn't hear any sound.
So I was thinking maybe I am missing some crucial part
By the way, how the sound signal passes through, when I hit the key, the information travels to software and then software sends signal to audio interface which then produces sound (with a help of speakers)? If that's correct, then there should be the same latency as if I had no external audio card and connected speakers directly to my headphone jack of laptop. Or am I wrong?
That little thingy uma222 has only one input (L and R) and one output (L and R) + headphone jack. I am curious, is it possible to connect all of this more directly than I showed in a picture?