Mellanox MCX654105A-HCAT and Dell R7525

Infrastructure & Networking Adapters and Cables InfiniBand/VPI Adapter Cards
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Hi all, attempting to achieve 200Gb interconnect between a few R7525s.

Tl;dr: can these cards (dual PCIe) be made compatible with this machine?

After installation, following the hardware maintenance guide on proper riser distribution, I am presented with “The system detected an exception during the UEFI pre-boot environment.” during POST, where the system hangs.

BIOS, Networking FW, iDRAC and LCC, are at latest versions.

Any and all suggestions greatly appreciated.

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After testing the card in other systems at my disposal, I found one that would POST with it.

Once booted, I decided to update the card’s firmware to latest using mstflint. Swapped it back into the non-booting R7525, and behold, it POSTed.

With the secondary PCIe board installed, the system correctly reads an available bandwidth of 200Gb/s.

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