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Mellanox ConnectX-4 dual-port QSFP28 network adapter card

Mellanox Technologies

Mellanox Technologies ConnectX-4 VPI EDR 100GbE QSFP28 Dual Port Adapter

SKU CH-3BVN-VR8XM

Dual-port 100 Gbps network adapter with PCI Express 3.0 x16 and QSFP28 connectors

  • Product typeNetwork Adapter
  • EDR 100 Gb/s InfiniBand and Ethernet connectivity
  • PCI Express 3.0 x16 host interface
  • QSFP28 dual-port design for flexible cabling
  • Plug-in card form factor for standard servers
  • Retail part MCX456A-ECAT for easy ordering

ConnectX-4 VPI EDR 100 Gb/s Adapter

The Mellanox ConnectX-4 VPI adapter delivers 100 Gb/s InfiniBand and Ethernet connectivity through two QSFP28 ports. It installs in a PCI Express 3.0 x16 slot as a standard plug-in card. The retail part number is MCX456A-ECAT.

Suited for high-performance clusters

This dual-port card fits servers that need low-latency 100 Gb/s links for data analytics, databases or web-scale workloads. Builders requiring single-port density, lower-speed Ethernet or a different form factor should consider other options.

Requires PCIe 3.0 x16 slot and QSFP28 transceivers

The adapter occupies a full-length x16 lane and needs compatible optics or direct-attach cables for each port. It frees the CPU from protocol processing by offloading RDMA and transport tasks directly on the card.

How it compares

Measured against everything we stock in Network Adapters & RJ45 Plugs, at today’s prices. Recalculated every night.

Price $205.99
Pricier than about 91% of the 1,221 comparable items (median $19.99).

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Specifications

Product
Brand nameMellanox
Product typeNetwork Adapter

Questions about this item

Does my motherboard need a PCI Express 3.0 x16 slot for the MCX456A-ECAT?

Yes, the ConnectX-4 VPI EDR adapter requires a PCIe 3.0 x16 slot to deliver the full 100 Gb/s bandwidth per port.

Will the dual QSFP28 ports negotiate down to 28 Gb/s InfiniBand FDR links?

The VPI ports auto-negotiate and will run at FDR 28 Gb/s when connected to compatible FDR switches or cables.

How can I confirm the card is operating at 100 Gb/s Ethernet after installation?

Check the link status with ethtool or the Mellanox firmware tools; both ports should report 100 Gb/s full duplex when connected to 100 GbE switches.

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