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These are all QDR. The cables are also QDR - 40Gbs.

I have replaced the Mellanox SFP+ ConnectX2 with QSFP+ ConnectX4. This removes the SFP+ vs QSFP from the equation. I have confirmed that the cards work with the IS5022 with OpenSM and found instructions to set it all up on Windows. The only thing I need now to complete the project is...

I need to buy 5x QSFP-QSFP passive 2m cables. I have mellanox cards and a mellanox switch. The prescribed parts are very expensive and rare in the used bin, but there are much cheaper 2m cables from NetApp that are QSFP-QSFP. So, in the infiniband world, are all QSFP cables equally compatible...

Wonderful - thank you for the information .. what are the simplest, least expensive 5-8 port ethernet switches that I can use?

I did not understand your reply - and thank you for replying btw. The cards purchase was seperate from the switch purchase. The cards are HP 671798-001 10GB PCI-E Mellanox ConnectX-2 Card High Profile AS# 666172-001. The switch is MELLANOX IS5022 QDR 8-Port IB Switch 851-0167-01. Does the...

My lab is 5x Windows Server 2016. I purchased 5x ConnectX2 and an IS-5022. I have 5x SFP+ to SFP+ Passive copper cables - 2m long. The IS-5022 has 8 QSFP ports (female). The ConnectX2 cards have SFP+ ports I believe, but documentation seems really difficult to get (these are HP Mellanox...