Bluefield Mellanox ConnectX-5 100gb to 10gb with Adapters

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GhettoSuperstar

New Member
Mar 12, 2020
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Posting this here just in case anyone needs to know.

I originally was using a Mellanox ConnectX-3 10Gigabit dual port MCX354A card

with an adapter to convert the QSFP+ ports to a SFP+ ports. Go to the following for info.

Then I used Direct connect fiber SFP transceivers to my Brocade ICX7250-24P Switch.
I just picked up two BlueField MBF1L516A-CSNAT ETH 100Gb 2xQSFP28. See below for info.
These are Smart NICs. I got a deal where I got two cards for $110. I bought just to test out these 100gb transceivers.

So out of the blue, I installed the Bluefield card, stuck the adapter with the direct connect fiber SFP tranceivers in one of the ports.
Windows 10 immediately recognized them as Mellanox ConnectX-5 cards and I had a 10gb connection.
Couldn't find on the internet if this would work, so I am posting here that it works.

There is just one catch...
The Bluefield card can not be Passively cooled. You need a fan or blower running across the card or it will overheat and shutdown the NIC.
Enjoy!!!