Hi,
Here are some links to my board..the d8b..and the original unit..the HUI hardware unit...that first implemented the HUI protocol.
http://www.mackie.com/products/d8b_v5/
https://www.youtube.com/watch?v=rfddVVIxDnE
http://www.ebay.com/sch/i.html?_nkw=mackie+hui
http://www.bluaudio.org/d8bridge/info.html#whatis
that last one is superbad! If my mixer ever fails im going to do it!
Thx for ur interest banned,
Guido