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 printed circuit board with gold edge connector and silver QSFP+ port bracket

Mellanox Technologies

Mellanox ConnectX-3 Pro 10/40/56 GbE network card MCX354A-FCCT

SKU CH-WQG9-TBTV0

ConnectX-3 Pro adapter delivers 10, 40 and 56 GbE connectivity with hardware offload engines for overlay networks, boosting performance in virtualized cloud and high-performance computing environments

  • 10/40/56 Gb/s connectivity for high-bandwidth server and storage links
  • Hardware offload engines accelerate overlay network tunneling workloads
  • PCI Express Gen3 interface supports modern server platforms
  • Optimised for clustered databases and parallel processing tasks
  • Reduces completion time and cost per operation in enterprise clouds

Server interconnect adapter

The Mellanox ConnectX-3 Pro MCX354A-FCCT is a network interface card built for servers and storage systems that require 10, 40 or 56 Gb/s connectivity. It targets public and private cloud clusters, enterprise data centres and high-performance computing workloads where consistent throughput matters.

PCI Express Gen3 bandwidth ceiling

The adapter plugs into a PCI Express Gen3 slot, so total throughput cannot exceed what that bus generation delivers. Workloads that push sustained 56 Gb/s traffic will hit the host bus limit before the card itself becomes the bottleneck.

Dual-port QSFP build

A low-profile bracket and dual QSFP cages let the card fit dense chassis while accepting direct-attach copper or optical modules for 10, 40 or 56 Gb/s links. The rigid PCB and metal cage assembly withstand repeated module changes in rack environments.

Highlights

  • 10/40/56 Gb/s connectivity for high-bandwidth server and storage links
  • Hardware offload engines accelerate overlay network tunneling workloads
  • PCI Express Gen3 interface supports modern server platforms
  • Optimised for clustered databases and parallel processing tasks
  • Reduces completion time and cost per operation in enterprise clouds

Specifications

No published specifications for this item yet.

Questions about this item

Should I choose the 10, 40 or 56 Gb/s version for my cluster?

The card supports 10, 40 and 56 Gb/s rates on the same ports; pick the speed that matches your switch and cabling.

What does the 56 Gb/s figure mean once the card is installed in a server?

It is the maximum per-port signalling rate; actual throughput depends on PCIe Gen3 x8 lane width and the connected switch.

Which interface does the MCX354A-FCCT use and what does it cap in practice?

It uses a PCI Express Gen3 x8 interface, which sets the ceiling for total bidirectional traffic through the adapter.

Also in this aisle

People compared these

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