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Mellanox ConnectX-3 network card with QSFP+ port and low-profile bracket

Mellanox Technologies

Mellanox Technologies CX353A MCX353A-FCBT FCBS network card

SKU CH-R4TA-SENAR

Adds 40 GbE and Infiniband connectivity with a QSFP+ port, plus low-profile and full-height brackets included

  • ConnectX-3 FDR Infiniband for high-performance computing clusters
  • 40GbE QSFP+ port delivers low-latency Ethernet connectivity
  • Low-profile and full-height brackets fit diverse server chassis
  • New condition ensures full manufacturer specification compliance
  • First listed by manufacturer in 2023 for current availability

ConnectX-3 FDR Infiniband adapter

This Mellanox ConnectX-3 network adapter provides a single 40 GbE QSFP+ port for high-throughput server connectivity. It operates on an FDR Infiniband link and fits a standard PCI Express slot. The card ships new with both a low-profile bracket and a full-height baffle included.

Suited for single-port 40G clusters

It serves administrators building or expanding a single-port 40 GbE fabric or FDR Infiniband cluster. Buyers who need dual-port redundancy or a different media type such as SFP+ should look at other adapters.

Single QSFP+ port at 40 GbE

The decisive specification is the single QSFP+ interface running at 40 GbE over FDR Infiniband. Confirm that your switch and cabling match this port type and speed before purchase.

Highlights

  • ConnectX-3 FDR Infiniband for high-performance computing clusters
  • 40GbE QSFP+ port delivers low-latency Ethernet connectivity
  • Low-profile and full-height brackets fit diverse server chassis
  • New condition ensures full manufacturer specification compliance
  • First listed by manufacturer in 2023 for current availability

Specifications

No published specifications for this item yet.

Questions about this item

What does the 40GbE capability deliver inside a server?

The card supports 40 gigabit Ethernet over a QSFP+ port, giving line-rate throughput for high-density clusters or storage fabrics when paired with compatible optics or direct-attach cables.

Which bus interface does the ConnectX-3 FDR adapter use and what bandwidth ceiling does it impose?

It plugs into a PCIe 3.0 x8 slot, so the practical ceiling is the eight-lane generation 3 link speed rather than the port's own 40 Gb/s rating.

What brackets ship with the MCX353A-FCBT for rack mounting?

The box includes both a low-profile bracket and a full-height baffle, letting you secure the card in either 1U half-height or standard full-height chassis slots.

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