Mellanox ConnectX-3 CX354A InfiniBand + 40GigE High Profile

🔥 Mellanox ConnectX-3 VPI Adapter CX354A | InfiniBand + 40GigE Dual Port


Model:                           CX354A (MCX354A-FCBT)
Brand:                           Mellanox (NVIDIA)
Chipset:                        ConnectX-3 VPI
Protocol:                       VPI InfiniBand AND 40GbE (per port)
Ports:                            Dual Port QSFP+
InfiniBand Speed:        FDR 56 Gb/s
Ethernet Speed:          40GbE / 56GbE
Interface:                      PCI Express 3.0 x8 (8 GT/s)
Bracket:                        Full Height / High Profile (Long Bracket)
RDMA Support:           Yes RoCE + Native InfiniBand
SR-IOV:                        Yes


  BRACKET NOTE: This card is supplied with a FULL HEIGHT / HIGH PROFILE
    (long) bracket fitted. It is designed for standard tower servers and
    full-size rack servers with full-height PCIe slots.
    Low profile / half-height bracket is NOT included.
    Please verify your server has a full-height PCIe slot before ordering.


🔬 LAB TESTED BUY WITH CONFIDENCE!

This card has been fully tested in our own lab environment on:
  🖥  Dell PowerEdge R640
  🖥  Dell PowerEdge R740

Both servers confirmed Ethernet full functionality including link-up and 40GbE network throughput. Ready to drop straight into your server.



💡 WHY BUY THIS CARD?

The Mellanox ConnectX-3 CX354A is one of the most versatile and cost-effective high-speed adapters ever made. Its VPI (Virtual Protocol Interconnect) architecture means each port can independently operate as either InfiniBand or 40GbE giving you the flexibility to run a single card across completely different fabrics.

With 56 Gb/s FDR InfiniBand and 40GbE capability, ultra-low latency, hardware RDMA, and SR-IOV support, this card punches well above its price point and remains a top pick for homelab builders, HPC clusters, and enterprise storage networks.



🖥  PERFECT FOR OPEN SOURCE & HOMELAB PLATFORMS:

  🔷 TrueNAS (Core & Scale)
     Ideal for high-speed NFS, iSCSI, and SMB storage
     networks. RDMA / RoCE support delivers exceptional
     throughput for all-flash storage pools.

  🔷 Proxmox VE
     Use SR-IOV for direct VM passthrough or as a
     high-bandwidth Ceph cluster interconnect and live
     migration backbone. Natively supported in Proxmox.

  🔷 XCP-ng / XenServer
     Excellent for high-speed VM networking and shared
     storage connectivity. Mellanox drivers are included
     in the XCP-ng kernel out of the box.



🚀 KEY FEATURES:
  Dual-port QSFP+ each port independently configurable
  VPI auto-sense InfiniBand or 40GbE per port
  FDR InfiniBand at 56 Gb/s for ultra-low latency HPC
  40GbE Ethernet with full RoCE / RDMA support
  SR-IOV for virtualisation and VM passthrough
  Hardware offloads reduce CPU overhead significantly
  Compatible with DAC cables, optical modules & QSA adapters
  Linux kernel driver (mlx4) included no extra installs
  Full Height / High Profile bracket fitted as standard


📦 CONDITION:  Tested & Fully Functional
🔖 Model:      CX354A (MCX354A-FCBT)
📌 Bracket:    Full Height / High Profile (Long) Fitted
📬 Shipping:   Available Nationwide | Fast Dispatch

Don't miss out stock is limited!