Using your MOTU interface as an audio interface over AVB Ethernet
When operating as an audio interface, MOTU AVB devices can be connected to a Mac with USB or Thunderbolt (if available). With firmware update 1.2.5 or later, and Mac OS X El Capitan (10.11) or later, a third option is available: AVB Ethernet.
How to set up AVB Ethernet audio I/O »
El Capitan AVB対応について.pdf »