MCX631435AC-GDAB, NVIDIA Mellanox ConnectX-6 Lx EN Adapter Card, Server Adapter, 50GbE/PCIe 4.0 x8/QSFP28

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    Overview

    NVIDIA Mellanox MCX631435AC-GDAB Overview

    The Mellanox MCX631435AC-GDAB is a data center class ConnectX-6 Lx EN network adapter card designed for modern Ethernet servers and storage platforms. Built on the ConnectX-6 Lx Ethernet adapter IC, it delivers reliable 50GbE connectivity through a single QSFP28 port, making it suitable for high-density racks in Asia, Europe, Africa, and North America. With a PCI Express 4.0 x8 host interface, this OCP 3.0 NIC fits directly into open compute servers used by distributors, system integrators, and enterprise end users. The MCX631435AC-GDAB supports dedicated host management under the OCP 3.0 specification, helping IT teams gain better visibility and control in virtualized and cloud environments. Its thumbscrew (pull tab) bracket allows quick tool-less installation and removal, which is helpful for resellers and integrators who manage large rollouts or frequent maintenance windows. Crypto acceleration and Secure Boot support add hardware-based protection that aligns with global security best practices and regulatory demands across regions. The QSFP28 connector gives flexibility to choose between DAC, AOC, or optical modules, so customers can adapt the link to their own data center or campus fiber design. Overall, the Mellanox MCX631435AC-GDAB offers a balanced mix of bandwidth, security, and manageability, helping organizations upgrade from legacy adapters to a consistent 50GbE platform with predictable performance and simplified operations.

    Product Highlights

    50GbE
    Link Speed
    PCIe 4
    Host Bus
    OCP 3.0
    NIC Form

    Product Applications Scenarios

    Data Center
    The 50GbE port and PCIe 4.0 x8 host bus reduce bottlenecks in spine-leaf designs, improving server utilization and lowering latency.
    Cloud Services
    OCP 3.0 form factor and host management support simplify large scale deployment, cutting rollout and service maintenance time.
    Research Computing
    Secure 50GbE connectivity speeds data transfer for simulations and analysis, helping clusters finish jobs faster and more reliably.

    Quality Certifications

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    Specification

    NVIDIA Mellanox MCX631435AC-GDAB Specification

    Model
    MCX631435AC-GDAB
    Brand
    Mellanox
    Product Type
    ConnectX-6 Lx EN network adapter card
    Controller
    ConnectX-6 Lx Ethernet adapter IC
    Host Interface
    PCI Express 4.0 x8
    Network Interface
    1 × QSFP28 Ethernet port
    Maximum Ethernet Link Speed
    50GbE
    Form Factor
    OCP 3.0 NIC
    Bracket Type
    Thumbscrew (pull tab) bracket
    Host Management
    With dedicated host management support (OCP 3.0)
    Security Features
    Crypto acceleration and Secure Boot support
    Connector Type
    QSFP28

    Get More Information

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    Q&A

    Questions & Answers

    How does the MCX631435AC-GDAB compare with other similar products?

    Compared to alternatives, the MCX631435AC-GDAB offers superior speed with 50GbE, robust security features like Crypto and Secure Boot, and PCIe 4.0 compatibility, making it a leading choice in its product category.

    What are the common troubleshooting issues with the MCX631435AC-GDAB?

    Common issues may include driver conflicts, firmware updates, or compatibility concerns. Ensuring proper installation, up-to-date drivers, and firmware can help mitigate such challenges for smooth operation.

    In what scenarios is the MCX631435AC-GDAB an optimal networking solution?

    The MCX631435AC-GDAB excels in environments requiring high bandwidth, low latency, and enhanced security, such as data-intensive applications, virtualization, artificial intelligence (AI), and machine learning (ML) projects.

    Are the products sold on router-switch.com authentic?

    Yes, router-switch.com only sells 100% genuine products from authorized brands. As a multi-brand authorized distributor, all items are sourced through official channels and include valid manufacturer warranties. Customers may verify authorization via brand websites or request certification documents.

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