Hardware usb audio catcher

Hi there, need a bit of help here. Since my Dwarf came back from the manufacture I have two new connectors shown with my pedalboard creator. They both named hardware usb audio catcher 1+2
Can anyone explain ro me what there are for and how do I use them best? Can’t find anything in the Wiki

This gives you the option of 2 I/O to your computer via USB. IMHO