We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board with gold edge connector and silver bracket

Mellanox Technologies

Mellanox MCX313A-BCCT ConnectX-3 Pro EN 10/40/56GbE PCIe 3.0 x8 network card

SKU CH-1RM1-SDP9S

A 10/40/56GbE PCIe 3.0 x8 network adapter with hardware offload for overlay networks in servers and storage

  • 10/40/56 GbE speeds for high-throughput server and storage workloads
  • PCIe 3.0 x8 interface delivers low-latency, high-bandwidth connectivity
  • Hardware offload engines accelerate overlay network tunnelling
  • Supports virtualized environments with guaranteed bandwidth services
  • Enables I/O consolidation to reduce infrastructure cost per operation

Server-grade 10/40/56GbE adapter

The ConnectX-3 Pro EN card delivers 10, 40 and 56 gigabit Ethernet over a PCI Express 3.0 x8 slot for servers and storage clusters. It targets cloud infrastructure, enterprise data centres and high-performance computing workloads that need consistent throughput.

Sustained throughput with hardware offload

Hardware tunnelling engines handle VXLAN and NVGRE encapsulation in silicon, keeping CPU cycles free during long-running transfers. Guaranteed bandwidth and low-latency service classes prevent tail-latency spikes when the fabric is fully loaded.

PCIe 3.0 x8 form factor for dense racks

The half-height bracket fits standard server chassis without blocking adjacent slots. Dual-port QSFP+ cages accept direct-attach copper or optical modules, letting operators match reach and cost per link without rewiring the rack.

Highlights

  • 10/40/56 GbE speeds for high-throughput server and storage workloads
  • PCIe 3.0 x8 interface delivers low-latency, high-bandwidth connectivity
  • Hardware offload engines accelerate overlay network tunnelling
  • Supports virtualized environments with guaranteed bandwidth services
  • Enables I/O consolidation to reduce infrastructure cost per operation

Specifications

No published specifications for this item yet.

Questions about this item

How much heat does the 56GbE card add to a server running all day?

The ConnectX-3 Pro EN adapter is a passive, fan-less PCIe 3.0 x8 card; it relies on the server’s own airflow and adds no active cooling noise.

Which cables and transceivers must I already have for the MCX313A-BCCT to link at 40 or 56GbE?

The card uses QSFP+ ports, so you need compatible QSFP+ DACs, AOCs or optical modules rated for the desired 10, 40 or 56GbE speed.

Will this PCIe 3.0 x8 adapter work in an older PCIe 2.0 slot I plan to keep?

Yes, the card is backward compatible with PCIe 2.0 x8 slots, though maximum throughput will be limited to the Gen2 bandwidth ceiling.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.