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Green PCB network card with two QSFP ports and PCIe x8 gold fingers

Mellanox Technologies

Mellanox Technologies MCX354A-FCBT ConnectX-3 VPI 40GbE 56Gb/s FDR IB PCIe 3.0 x8 Dual QSFP

SKU CH-2PY1-CQKPW

Dual-port 40GbE and 56Gb/s FDR InfiniBand adapter with PCIe 3.0 x8 connectivity for high-performance servers

  • Dual QSFP ports enable 40GbE and 56Gb/s FDR InfiniBand connectivity
  • PCIe 3.0 x8 interface delivers high-throughput, low-latency data transfer
  • ConnectX-3 VPI supports both Ethernet and InfiniBand on one adapter
  • Hardware offload engines reduce CPU load for storage and compute workloads
  • RoHS-6 compliant design meets environmental standards for data-centre deployment

ConnectX-3 VPI 40GbE Adapter

The Mellanox ConnectX-3 VPI adapter delivers 40GbE and 56Gb/s FDR InfiniBand connectivity through a PCIe 3.0 x8 interface. Dual QSFP ports enable high-throughput networking for enterprise data centres and high-performance computing clusters. Virtual Protocol Interconnect allows a single card to serve both Ethernet and InfiniBand fabrics. This new add-on card targets environments that demand low-latency, high-bandwidth interconnects.

Suited for clustered databases

This adapter fits servers running clustered databases, parallel processing, transactional services or embedded I/O applications where reduced completion time matters. It is not for desktop PCs or workstations lacking PCIe 3.0 x8 slots and QSFP cabling infrastructure. Buyers who need single-port connectivity or lower-speed Ethernet should evaluate other options.

Verify PCIe slot and fabric requirements

Confirm the host system provides an available PCIe 3.0 x8 slot with sufficient bracket space for a dual-port QSFP card. Ensure the target fabric uses 40GbE or 56Gb/s FDR InfiniBand and that compatible QSFP transceivers and cables are sourced separately. Check operating-system driver support for the ConnectX-3 VPI architecture before ordering.

Highlights

  • Dual QSFP ports enable 40GbE and 56Gb/s FDR InfiniBand connectivity
  • PCIe 3.0 x8 interface delivers high-throughput, low-latency data transfer
  • ConnectX-3 VPI supports both Ethernet and InfiniBand on one adapter
  • Hardware offload engines reduce CPU load for storage and compute workloads
  • RoHS-6 compliant design meets environmental standards for data-centre deployment

Specifications

No published specifications for this item yet.

Questions about this item

Will my server need a PCIe 3.0 x8 slot to install this ConnectX-3 card?

Yes, the adapter requires a PCIe 3.0 x8 slot running at 8 GT/s for full 40 GbE and 56 Gb/s FDR InfiniBand bandwidth.

Can I keep my older 10 GbE switches and cables when adding this dual-port QSFP adapter?

The card supports 10 GbE operation, so existing 10 GbE infrastructure will work; you only need compatible QSFP-to-SFP+ modules or direct-attach cables.

How can I verify both QSFP ports are linked at 40 GbE or 56 Gb/s after installation?

Check the adapter firmware or OS network tools — each port should report a 40 GbE or 56 Gb/s FDR InfiniBand link with active status LEDs on the bracket.

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