Finally found out why my audio box isn't working over USB-C - Windows sees the device but doesn't play any sound. I went in circles with the support then paused, came back to this today and thought I was wondering if this would work with my Mac USB-C power cable, yes! On closer inspection the cable does NOT "snap" into the Focusrite Scarlett 18i20. The connection is unreliable and can easily drop the audio or even drop out.