I want to connect them to the SFP+ ports, the QSFP's on the back of my 6610's have been taken by the stacking cables (I know I don't need it, but that is not the point ).the card looks good, but that cable is an SFP+ breakout cable, when it sounds like you want to do 40gb direct to that mellanox card in your dell, in which case you need qsfp to qsfp like this NEW Brocade 58-0000033-01 4x10GE QSFP Passive Cable 1M | eBay
From what I understood reading through the thread I can split the 40Gb into 4 separate 10Gb connections? I've never worked with qsfp before, so I'm not really sure how this stuff works.
Indeed, initially I was afraid it might break during shipping, but I guess I can buy three of them and it'll still be cheaper.Are you looking for connect-x3 cards just in the netherlands?
If you don't mind to wait you can get them cheaper from the states: HP 544QSFP Infiniband 10/40GB FDR/EN PCIe Dual Port HCA 656089-001 649281-B21 | eBay