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Nvidia MCX4421A-ACAN Network Cards Mellanox Connectx -4 Lx En Adapter Card For Open Compute Project (ocp) - Pci Express 3.0 X8 - 2 Port Mcx4421aacan 783555115756
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Product Specifications



Mellanox ConnectX -4 Lx EN Adapter Card for Open Compute Project (OCP) - PCI Express 3.0 x8 - 2 Port(s) - Optical Fiber - 25GBase-X - Plug-in Card (MCX4421A-ACAN)

MELLANOX CONNECTX-4 LX English CTLR - NETWORK INTERFACE CARD OCP25GB

Manufacturer Part Number: MCX4421A-ACAN



CPN:MELLANOX CONNECTX-4 LX English CTLR - NETWORK INTERFACE CARD OCP25GB
MANUFACTURER NAME: Nvidia
MANUFACTURER PART NUMBER: MCX4421A-ACAN
UPC EAN CODE: 783555115756
LANGUAGE: EN
MARKET:US

General Information:

ConnectX-4 Lx EN Network Controller with 10/25/40/50Gb/s Ethernet interface delivers high-bandwidth, low latency and industry-leading Ethernet connectivity for Open Compute Project (OCP) server and storage applications in Web 2.0, Enterprise Data Centers and Cloud infrastructure.

With ConnectX-4 Lx EN, server and storage applications will achieve significant throughput and latency improvements resulting in faster access, real-time response and more virtual machines hosted per server. ConnectX-4 Lx EN for Open Compute Project (OCP) specification 2.0 improves network performance by increasing available bandwidth while decreasing the associated transport load on the CPU especially in virtualized server environments.

Moreover, ConnectX-4 Lx EN introduces the new Multi-Host technology, which enables a new innovative rack design that achieves maximum CAPEX and OPEX savings without compromising on network performance.

MELLANOX MULTI-HOST™ TECHNOLOGY

Mellanox's ConnectX-4 Multi-Host provides high speed interconnect to up to four separate hosts from a single NIC with no performance degradation on any of them. Furthermore, ConnectX-4 Lx EN offers four fully-independent PCIe buses, lowering total cost of ownership in the data center by reducing CAPEX requirements from four cables, NICs, and switch ports to only one of each, and by reducing OPEX by cutting down on switch port management and overall power usage.

Each host can be active or inactive at any time, independent of the other hosts, and receives bandwidth of its own. Bandwidth is split between the hosts, either evenly (default) or based on configurable differentiated Quality of Service (QoS), depending on the data center's needs. Multi-Host technology features uncompromising independent host management, with full independent NC-SI/MCTP support to each host and to the NIC. IT managers can remotely control the configuration and power state of each host individually, such that management of one host does not affect host traffic performance or the management of the other hosts, guaranteeing host security and isolation. To further lower the total cost of ownership, ConnectX-4 Lx EN supports management of the multiple hosts using a single BMC, with independent NC-SI/MCTP management channels for each of the managed hosts.

Multi-Host also supports a heterogeneous data center architecture; the various hosts connected to the single adapter can be x86, Power, GPU, or Arm, thereby removing any limitations in passing data or communicating between CPUs.

ManufacturerNVIDIA Corporation
Manufacturer Part NumberMCX4421A-ACAN
Manufacturer Website Addresshttp://www.nvidia.com
Brand NameMellanox
Product LineConnectX-4 Lx EN
Product ModelMCX4421A-ACAN
Product NameConnectX -4 Lx EN Adapter Card for Open Compute Project (OCP)
Packaged Quantity1
Product Type25Gigabit Ethernet Card
  Product UPC783555115756
Interfaces/Ports:
Host InterfacePCI Express 3.0 x8
Total Number of Ports2
I/O Expansions:
Expansion Slot TypeSFP28
Media & Performance:
Media Type SupportedOptical Fiber
Network & Communication:
Network Technology25GBase-X
Physical Characteristics:
Form FactorPlug-in Card
Miscellaneous:
Device SupportedServer
Environmentally FriendlyYes
Country of OriginIsrael

Date Inserted: Wednesday February 25, 2026

This product was last updated on Monday April 20, 2026

All products are brand new and factory sealed unless otherwise stated.
 *** Disclaimer- Information is supplied by the Manufacturer. The image, including color, may differ from actual product appearance. CompSource, Inc. is not responsible for data. ***

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For support on this product, please contact Nvidia.  http://www.nvidia.com/content/global/global.php


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Local #: (919) 572-1370

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    Fueled by the massive growth of the gaming market and its insatiable demand for better 3D graphics, we've evolved the GPU into a computer brain at the intersection of virtual reality, high performance computing, and artificial intelligence.

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    For 30 years, the dynamics of Moore's law held true. But now  CPU scaling is slowing while the demand for computing power surges ahead.

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    GPU acceleration is the most accessible and energy-efficient path forward for the world's most powerful computers. More than 600 applications support CUDA today, including the top 15 in HPC.

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    Building amazing AI applications begins with training neural networks. NVIDIA DGX 2 is the world's most powerful tool for AI training, uniting 16 GPUs to deliver 2 petaflops of training performance.

    In July 2019, DGX-2 set new world records in the debut of MLPerf, a new set of industry benchmarks designed to test deep learning performance.

    Trained AI applications are deployed in large-scale, highly complex cloud data centers that serve voice, video, image, and recommendation services to billions of users. Hundreds of AI algorithms are in use today, making inference a big and costly challenge.

    NVIDIA TensorRT software and the new T4 GPU converge to optimize, validate, and accelerate trained neural networks.

    AI breakthroughs no longer come from scientific labs and hyperscale cloud providers alone.

    Self-driving cars, automated farm equipment, and autonomous factory robots have moved quickly from ideas to reality. And it's only the beginning.

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    Simulation expands the training set and covers dangerous scenarios that can't be captured on the road. The trained model is deployed on an in-car supercomputer, for capabilities like pedestrian detection and driver monitoring.

    NVIDIA is united by a unique culture - the operating system of our company. We dream big, take risks, and learn from our mistakes together. Speed is the key to our success. Craftsmanship is a passion. There are no org charts - the project is the boss.

    These beliefs inform everything we do, from designing amazing products to building one of the world's great companies - a place where people can do their life's work.


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