I have the Casio WK6600. It uses the USB connection, which I plug directly into the computer, as my UMC204 does not have a USB input. I was not aware that I needed to send the signal to the thru option.
Also, when using RB I am not concerned with whether I get an audio ouput to the computer or MIDI data, as RB will ask me if I want the MIDI track to be converted and posted to the next track as audio. I just want to get a reading on the vu-meters so I know the signal will record to RB. Hope this makes sense....


Music is what feelings sound like.

Windows 11, Behringer UMC204HD Audio Interface, BIAB/RB 2022 Ultra Pak Plus