Someone I know may have bought more Mellanox ConnectX-3 cards and therefore needs cables. Found a few interesting ones:
5M FDR Optical Cable - a bit long but not overly expensive: IBM Mellanox QSFP Optical FDR14 Infiniband Cable 5M 00W0073 | eBay
OK here is the risky one: Dell Force 10 CBL QSFP 4X10GSFP Pass 5M Breakout 4X10GB P N HVVVF New | eBay
QSFP breakout cable to 4x SFP+.
Absolutely no clue if any of these will work but am going to give them a try. Put an offer in on four of the optical cables and bought one of the breakout cables.
5M FDR Optical Cable - a bit long but not overly expensive: IBM Mellanox QSFP Optical FDR14 Infiniband Cable 5M 00W0073 | eBay
OK here is the risky one: Dell Force 10 CBL QSFP 4X10GSFP Pass 5M Breakout 4X10GB P N HVVVF New | eBay
QSFP breakout cable to 4x SFP+.
Absolutely no clue if any of these will work but am going to give them a try. Put an offer in on four of the optical cables and bought one of the breakout cables.