I'm trying to use a pair of X520-2 cards under Win7 64bit machines with an HP X240 (JD097B) 3m DA cable.
The cards seems to refuse to work with this cable, windows is logging "The driver was unable to load due to an unsupported SFP+ module installed in the adapter".
I tried to switch ports and with a HP ProCurve switch(2910al) and got the same results.
Connecting the cards with a Intel SFP+ SR module in each one seems to work just fine.
Thanks in advance!