Just checking it was the same one, i have had this card a while now and i'm adding my experiences for future searches.
This works perfectly with Unraid with no noticeable bottleneck. I installed it over the supermicro and other 8 port cards because if your like me and you only have 1 x8 pcie this will let you use get the full use out of your pro licence without a new mobo (22 data, 1 parity and 1 cache Unraid version 4.7)
Granted, it does run a bit warmer than the other cards BUT if you have 2 supermicros then the temp of the 2 cards is more significant than just one 16i and the temps can be controlled if you plan out the airflow in your case.. One pointer, get the correct breakout cables.