Hrm, I think those are the same cables that I have. I'll check mine as well and can compare. I have the 8m ones
I couldn't get even a point-to-point to work with 2.9.1 and ESX 5.1, I had to drop it to 2.7. I think we lose out on a few features but not the end of the world.
Let's both check out cables to see what's up. I've used random ports on my switch and seem to always link up at 4xDDR oddly.