I have a 16.4.2AI series mixer and would love to be able to use a 16.8 stagebox, but all the reading I have done shows you must have a SL-AVB-MIX option card to make this happen, all my searches for this have led to dead ends, no one seems to have one. Is there a work around for this, I really do not want to buy a new mixer, but would love to run a cat cable to a box rather then a large snake. Is there a way to use a latop to do the AVB conversion and connect the stagebox that way? Looking for any and all options without buying a new mixing board. Thanks in advance, and if anyone has a AVB card they are willing to sell, please let me know. Thank you.