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Green single-port PCIe network card with silver QSFP cage and metal bracket

Mellanox Technologies

Mellanox Technologies MCX313A-BCCT ConnectX-3 Pro EN 40GbE QSFP PCIe 3.0 x8 Network Card

SKU CH-D7A1-C0QJ7

Adds a single-port 40 Gigabit Ethernet QSFP connection over a PCIe 3.0 x8 slot

  • 40 Gigabit Ethernet throughput for demanding workloads
  • Single QSFP port simplifies high-speed cabling
  • PCIe 3.0 x8 interface delivers ample host bandwidth
  • ConnectX-3 Pro controller offloads networking tasks from the CPU

40 GbE single-port adapter

The Mellanox ConnectX-3 Pro EN card delivers a single 40 Gigabit Ethernet link through a QSFP cage over a PCIe 3.0 x8 slot. It targets servers and workstations that need high-throughput, low-latency wired connectivity for storage or cluster traffic.

QSFP cage requires separate optics

The on-board QSFP port accepts compatible transceivers or direct-attach cables sold separately, so buyers must source the correct optics for their link distance and fibre type. Systems without an available x8 slot or without 40 GbE switching infrastructure cannot use this adapter.

How it compares

Measured against everything we stock in Ethernet Cards & NICs, at today’s prices. Recalculated every night.

Price $31.99
Cheaper than about 82% of the 1,505 comparable items (median $90.99).

Specifications

Product
Model nameMCX313A-BCCT

Questions about this item

What maintenance will the QSFP port on this MCX313A-BCCT card require over time?

Keep the QSFP port and transceiver free of dust with occasional compressed-air cleaning; the card itself has no moving parts or user-serviceable components.

What limit appears first when the ConnectX-3 Pro EN runs a sustained 40 Gb/s load?

The single 40 Gb/s QSFP port is the throughput ceiling; the PCIe 3.0 x8 host interface provides enough bandwidth that the port saturates before the bus does.

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