1) no digital interface at all. Regardless if you want a TouchMix 8/16 console for their fantastic portability, QSC considers them the "cheap" versions vs the TouchMix 30 and provides Not even a cheap-as-chips USB 'chip'. And I've been told, that tracks from TM hard drive recordings need to be...
Yeah, if at least it was an external USB-C job, you'd always know how to power it no matter where you are - even for concerts you run out of the back of a truck...