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Mellanox® ConnectX®-4 Lx EN Single-Port 25Gb/s Ethernet Network Interface Card

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Mellanox® ConnectX®-4 Lx EN Single-Port 25Gb/s Ethernet Network Interface Card


Availability: In stock

Volume Price: Inquire
  • Model: MCX4111A-ACAT
  • CPN: MCX4111A-ACAT
● 25Gb/s Ethernet per port
● Single SFP28 Port
● PCIe3.0, x8 Lane
● RoHS R6
● Connector & Cable Medium: SFP28 Direct Attach Copper / SFP28 Transceiver
Product Description Shipping & Payment Customer Reviews


ConnectX-4 Lx EN Network Controller with 25Gb/s Ethernet connectivity addresses virtualized infrastructure challenges, delivering best-in-class and highest performance to various demanding markets and applications. Providing true hardware-based I/O isolation with unmatched scalability and efficiency, achieving the most cost-effective and flexible solution for Web 2.0, Cloud, data analytics, database, and storage platforms. ConnectX-4 Lx EN provides an unmatched combination of 25GbE bandwidth, sub-microsecond latency and a 75 million packets per second message rate. It includes native hardware support for RDMA over Converged Ethernet, Ethernet stateless offload engines, Overlay Networks, and GPUDirect® Technology.

  • 25Gb/s speed
  • Multi-Host technology (specific OPNs)
  • OCP Specification 2.0 and 0.5, as applicable (specific OPNs)
  • Virtualization
  • Low latency RDMA over Converged Ethernet
  • CPU offloading of transport operations
  • Application offloading
  • End-to-end QoS and congestion control
  • Hardware-based I/O virtualization
  • Erasure Coding offload
  • Benefits:
  • Highest performing boards for applications requiring high bandwidth, low latency and high message rate
  • 25GbE connectivity for servers and storage
  • Standard PCIe and Open Compute Project form factor
  • Industry leading throughput and latency for Web 2.0, Cloud and Big Data applications
  • Maximizing data centers’ return on investment (ROI) with Multi-Host technology
  • Smart interconnect for x86, Power, ARM, and GPU-based compute and storage platforms
  • Cutting-edge performance in virtualized overlay networks
  • Efficient I/O consolidation, lowering data center costs and complexity
  • Technical Specifications:
    # of Ports Single
    Speed & Slot Width 8 GT/s, x8 Lane
    System Interface Type PCIe 3.0 (8.0 GT/s)
    Cable Medium Copper/Optical
    Cabling Type SFP28 Direct Attach Copper/SFP28 Transceivers
    Bracket Height Full height
    CPU offload Yes
    RoHS compliant Yes
    Erasure Coding offload Yes
    I/O Virtualization Yes
    Storage Offloads RAID offload
    Voltage 12V, 3.3V
    Humidity 90% relative humidity
    Temperature Operational 0°C to 55°C
    Non-operational -40°C to 70°C
    Supported Operating Systems – RHEL/CentOS
    – Windows
    – FreeBSD
    – VMware
    – OpenFabrics Enterprise Distribution (OFED)
    – OpenFabrics Windows Distribution (WinOF-2)
    Order Information:
    Part Number  Compare to Speed Controller(s) Port number Port typer
    710-25G-2S-X8 Intel XXV710-DA2 25G Intel XXV710 2 SFP28 Port
    MCX4121A-ACAT MCX4121A-ACAT 25G / 2 SFP28 Port
    MCX4111A-ACAT MCX4111A-ACAT 25G / 1 SFP28 Port
    XL710-40G-1Q-X8 Intel XL710-QDA1 40G Intel XL710-AM1 1 QSFP+ Port
    XL710-40G-2Q-X8 Intel XL710-QDA2 40G Intel XL710-BM2 1 QSFP+ Port
    XL710-10G-4S-X8 Intel X710-S4 10G Intel XL710 4 RJ-45 Port
    XL710-10G-4T-X8 Intel X710-T4 10G Intel FTXL710-BM1 4 RJ-45 Port
    MCX456A-ECAT MCX456A-ECAT 100G / 2 QSFP28 Port
    MCX415A-CCAT MCX415A-CCAT 100G / 1 QSFP28 Port
    MCX416A-CCAT MCX416A-CCAT 100G / 2 QSFP28 Port

    25/40/100G NIC

    Shipping Methods

    Global Shipping

    Together with SFPcables, there is a Global Delivery from us like no others. We will not only delivery the correct shipment, but also for more things for an efficient and flexible way of business cooperation with our partners.
    SFPcables.com ship worldwide to nearly every country across the globe, covering North and South America, Europe, Asia, Africa, Oceania, and more. We employ the services of major, trusted international carriers to ensure your package arrives to your destination safely and securely.

    38 Country Free shipping

    Online orders exceed $800.00 to following countries can enjoy Free Shipping;
    Asia: Philippines, South Korea, Singapore, Brunei, Taiwan, Malaysia, Thailand, Japan, Indonisia, Indonesia, Kampuchea, Laos, Vietnam
    North America: United States, Canada, Mexico
    Oceania: Australia, New Zealand
    Eastern Europe: Bulgaria, Estonia, Latvia, Lithuania, Slovakia, Romania
    Southern Europe: Slovenia, Greece, Spain, Portugal, San Marino, Italy
    Central Europe: Slovenia, Germany, Poland, Czech, Slovakia, Hungary, Austria, Switzerland
    Western Europe: Belgium, Britain, Ireland, Netherlands, Luxemburg, France
    Northern Europe: Sweden, Denmark, Finland, Norway

    Typically, we use DHL and UPS to deliver your goods. Shipping methods are not fixed, they may vary according to country location, order amount, customer requirements, etc.

    Payment Methods

    Payment methods available at SFPcables.com include:

    • PayPal and PayPal Express
    • Bank to bank wire transfers (T/T)
    • Western Union
    Warranty & Service

    Warranty Policy:

    Warranty Service Pack1*:     All 10Gtek's products share 1-year standard warranty.
    Warranty Service Pack2*:     Enhanced Item (Apply to Online order at SFPcables.com)

    DAC Cables (Passive) 3-Year Warranty
    DAC Cables (Active) 3-Year Warranty
    AOC Cable 3-Year Warranty
    Fiber Optic Transceivers 3-Year Warranty (1G, 10G)
    1.5-Year Warranty (25G, 40G, 100G, 200G)
    Switch, Convertors 1-Year Warranty
    NIC/CNA Cards 1-Year Warranty
    Optical System 1-Year Warranty
    Patch Cords 3-Year Warranty
    Power Adapter
    0.5-Year Warranty
    Consumer cable 3-Month

    15-Day money back Guarantee

    15-Day money back guarantee applies to all products sold by SFPcables.com provided that the items are new, undamaged, unmodified and in good resalable condition. If you are not satisfied with the product, you can apply return within 15 days.
    All freight charges, transaction costs (bank charge or Paypal cost, etc) are the responsibility of the customer.

    Returns are not acceptable if:
    1. The products are proved to have been abused, misused, replaced, repaired, or modified.
    2. After 15 days of delivery, returns are not acceptable. If the items are still under warranty period, customer could ask for repair or replacement. 
    3. No Return agreement was reached with a SFPcables.com sales representative before Returns.
    4. Return process is not done based on SFPcables.com Return instructions.



    The logos, products and/or company names referred to herein is for informational purposes only, merely indicating that 10Gtek’s products can be compatible with the mentioned products. The logo 10Gtek is a registered trademark of 10GTEK TRANSCEIVERS CO., LTD.

    10GTEK TRANSCEIVERS CO., LTD. All Rights Reserved.


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    Mellanox® ConnectX®-4 Lx EN Single-Port 25Gb/s Ethernet Network Interface Card
    Free shipping on orders over $800.