The Card is the digital out Audio and is for the in/out for the audio. It is controlled on the lionstracs X76 by JACK
It routes all the Audio to the in/outs from all the hardware.
You can find the information on line with this
link.
https://wiki.archlinux.org/index.php/Envy24control#InstallationIf the link does not work or you are not sure type it in your
Browser.
Yours Brian