Yea…I have two of the MTPAV’s, one parallel, and the other USB. If i’m not mistaken…there was a firmware update for the MTPAV’s! I bought the USB version to replace the parallel one, but now since I use mostly VSTi’s I’ve been getting away with one controller so the Fireface 800 has been enough. I also have some other MIDI dinosaurs in my studio, but I’ve been weaning myself off the old tech for the new! As a result, I don’t have to troubleshoot as many connections. 
Al