Unbelievable deal! These are low profile dual port cards capable of 56Gbps IB and 40Gbps Ethernet.
I messaged the seller and bought 32 cards for $25 each plus shipping.
He said he has 1300 in stock so there's plenty for everyone
They can be flashed from their HP firmware to stock Mellanox firmware. Relevant thread:
https://forums.servethehome.com/ind...81-b21-656089-001-to-mellanox-firmware.13893/
ebay: HP 649281-B21 Infiniband FDR/EN 10/40GB 2P 544QSFP ADAPTER 656089-001 661685-001 | eBay
I messaged the seller and bought 32 cards for $25 each plus shipping.
He said he has 1300 in stock so there's plenty for everyone
They can be flashed from their HP firmware to stock Mellanox firmware. Relevant thread:
https://forums.servethehome.com/ind...81-b21-656089-001-to-mellanox-firmware.13893/
ebay: HP 649281-B21 Infiniband FDR/EN 10/40GB 2P 544QSFP ADAPTER 656089-001 661685-001 | eBay