900-9X4B0-0013-0Q0 Nvidia Connectx-4 Lx En 25Gbe SFP28 PCIe Network Interface Card

Overview of the QSFP Network Interface Card

The 900-9X4AC-0054-ST0 Nvidia ConnectX-4 VPI Dual Ports QSFP PCIe Adapter Card is a high-performance enterprise networking solution engineered for modern data centers, high-performance computing environments, cloud infrastructure, storage fabrics, and virtualized enterprise deployments. Designed to deliver exceptional bandwidth, ultra-low latency, and advanced hardware acceleration, this dual-port adapter integrates Nvidia’s proven ConnectX-4 Virtual Protocol Interconnect (VPI) architecture to support both InfiniBand and Ethernet connectivity within a single flexible hardware platform.

General Specification

• Brand: Nvidia 
• Part Number: 900-9X4B0-0013-0Q0
• Product Type: Network Interface Card

Model Identification and Product Details

• Product Family: ConnectX-4 Lx EN
• Interface Type: PCI Express
• Network Speed: 25 Gigabit Ethernet
• Port Type: SFP28
• Adapter Category: Ethernet Network Interface Card
• Deployment Type: Enterprise Server and Data Center Networking
• Form Factor: Standard PCIe Add-in Card

Key Offload Features

• TCP segmentation offload
• Large receive offload
• Checksum offloading
• Receive-side scaling
• Virtual machine queue acceleration
• Overlay network offloads
• Storage protocol acceleration
• RDMA support capabilities

Virtualization Benefits

• Reduced hypervisor overhead
• Accelerated virtual machine networking
• Improved tenant isolation
• Enhanced network throughput consistency
• Lower latency for multi-tenant workloads
• Efficient cloud orchestration support

Storage Use Cases

• Software-defined storage
• Distributed file systems
• Backup and disaster recovery systems
• Storage replication
• Database cluster networking
• NVMe-over-Ethernet deployments
• SAN modernization projects

Security Features

• Secure boot support
• Hardware packet filtering
• Traffic isolation controls
• Virtual network segmentation
• Enhanced firmware protection
• Secure management integration

Reliability Advantages

• Enterprise-grade hardware design
• Long lifecycle support
• Stable firmware ecosystem
• Proven data center performance
• High availability deployment readiness
• Vendor-certified interoperability

Server Platform Compatibility

• Rack-mounted enterprise servers
• Blade server platforms
• Storage appliances
• Virtualization hosts
• Hyperconverged infrastructure systems
• GPU computing nodes
• Private cloud clusters

Nvidia 25GbE SFP28 PCIe Network Interface Card 

The Nvidia 900-9X4B0-0013-0Q0 ConnectX-4 Lx EN 25GbE SFP28 PCIe Network Interface Card is a high-performance Ethernet adapter engineered for modern enterprise data centers, cloud infrastructures, virtualization environments, and high-throughput networking applications. Designed to deliver exceptional packet processing efficiency, low-latency connectivity, and scalable bandwidth, this advanced network interface card supports 25 Gigabit Ethernet connectivity through SFP28 interfaces while leveraging PCIe architecture for seamless server integration.

As organizations continue to demand faster data transfer rates, reduced latency, and enhanced network intelligence, the ConnectX-4 Lx EN series stands out as a critical infrastructure component. This adapter is optimized for software-defined networking, network function virtualization, storage acceleration, and high-density computing deployments. Built with Nvidia’s renowned networking technology, formerly under Mellanox branding, this network interface card provides reliable connectivity, hardware offload capabilities, and superior compatibility across enterprise operating systems and server platforms.

Core Product and Hardware Architecture

The Nvidia ConnectX-4 Lx EN 25GbE SFP28 PCIe Network Interface Card combines robust Ethernet performance with intelligent acceleration features to support data-intensive workloads. It is specifically engineered for enterprise servers requiring high-speed Ethernet throughput while maintaining energy efficiency and deployment flexibility.

Featuring advanced controller architecture, this adapter delivers optimized packet processing for virtualized applications, cloud-native services, distributed storage clusters, and large-scale database environments. The 25GbE standard provides a significant performance improvement over legacy 10GbE deployments, allowing organizations to maximize network efficiency without requiring extensive infrastructure overhauls.

25GbE Networking Performance Advantages

One of the primary advantages of the Nvidia 900-9X4B0-0013-0Q0 ConnectX-4 Lx EN adapter is its support for 25 Gigabit Ethernet, a networking standard increasingly adopted in hyperscale and enterprise environments. Compared to traditional 10GbE adapters, 25GbE provides significantly improved throughput while preserving similar cable infrastructure options.

The enhanced bandwidth capacity enables faster application responsiveness, reduced network congestion, and improved data movement between compute nodes, storage systems, and edge environments. Organizations deploying high-performance workloads benefit from better scalability and increased server utilization.

SFP28 Interface and Flexible Optical Connectivity

The SFP28 interface included in the Nvidia ConnectX-4 Lx EN network adapter offers flexible connectivity options for both short-range and long-range networking deployments. SFP28 transceivers enable high-density cabling while supporting various optical and direct attach copper configurations.

This flexibility allows IT teams to customize networking deployments according to infrastructure requirements, rack layouts, and budget considerations. Whether deploying within a single rack or connecting multiple data halls, SFP28 compatibility ensures adaptability.

PCIe Integration and Server Compatibility

The PCI Express interface ensures seamless integration with modern enterprise servers and high-performance computing systems. PCIe connectivity allows the adapter to communicate efficiently with system processors, minimizing bottlenecks and maximizing throughput.

The Nvidia 900-9X4B0-0013-0Q0 supports deployment across multiple server brands and motherboard architectures, making it suitable for both new installations and infrastructure upgrades.

Advanced Hardware Offload Technologies

Hardware acceleration is one of the defining strengths of the ConnectX-4 Lx EN adapter. By offloading networking tasks from the CPU, the adapter improves overall server performance and reduces computational overhead.

CPU-intensive operations such as checksum calculations, segmentation, encryption processing, and packet filtering can be managed directly by the network card, freeing compute resources for mission-critical applications.

Virtualization and Cloud Infrastructure Optimization

Virtualized environments place heavy demands on networking components due to high packet density, east-west traffic, and dynamic workload mobility. The Nvidia ConnectX-4 Lx EN NIC is optimized specifically for these challenges.

It supports advanced virtualization technologies that improve performance for VMware, Microsoft Hyper-V, KVM, and containerized deployments. Features such as SR-IOV allow virtual machines to access hardware resources directly, significantly improving throughput and reducing latency.

Storage Networking and Data Transfer Acceleration

Storage-intensive applications benefit greatly from the high bandwidth and low latency characteristics of the ConnectX-4 Lx EN adapter. Modern storage architectures such as NVMe over Fabrics, iSCSI, and distributed object storage depend on efficient network communication.

This network interface card enables rapid movement of storage data across clusters while minimizing bottlenecks and maximizing application responsiveness.

Low-Latency Application Support

Applications that require deterministic performance and microsecond-level responsiveness can leverage the low-latency architecture of the Nvidia ConnectX-4 Lx EN adapter. Real-time analytics, financial trading systems, AI model serving, and media processing environments demand consistent packet delivery and minimal transmission delays.

By optimizing data paths and minimizing software intervention, this NIC contributes significantly to overall application speed and responsiveness.

Security and Data Integrity Features

Enterprise networking requires robust security capabilities and dependable packet integrity. The ConnectX-4 Lx EN network adapter incorporates multiple hardware-assisted security features designed to protect data in transit and support secure infrastructure deployments.

Hardware-level validation, isolation, and packet filtering contribute to stronger security posture while reducing software dependency.

Energy Efficiency 

Data center efficiency extends beyond raw performance. Power consumption and thermal management are essential considerations in large-scale deployments. The Nvidia ConnectX-4 Lx EN adapter is engineered for efficient power utilization while delivering enterprise-grade networking throughput.

Lower power draw contributes to reduced operating expenses, improved rack density, and easier thermal management in constrained environments.

Enterprise Deployment Scenarios

The Nvidia 900-9X4B0-0013-0Q0 ConnectX-4 Lx EN NIC supports a wide range of deployment models across industries. Its flexible design allows organizations to integrate the adapter into both traditional enterprise networks and cutting-edge digital transformation projects.

Reliability and Enterprise-Class Stability

Enterprise infrastructure depends on predictable performance and long-term reliability. Nvidia’s ConnectX product family is known for rigorous validation, firmware maturity, and broad ecosystem compatibility.

The 900-9X4B0-0013-0Q0 model is engineered for continuous operation in mission-critical environments, ensuring consistent uptime and dependable network behavior.

Nvidia ConnectX-4 Lx EN 25GbE Network Interface Cards

Organizations upgrading to modern Ethernet infrastructure need a balance of speed, compatibility, reliability, and advanced acceleration. The Nvidia 900-9X4B0-0013-0Q0 ConnectX-4 Lx EN 25GbE SFP28 PCIe Network Interface Card delivers all these benefits in a compact and highly deployable form factor.

Whether supporting cloud migration, virtualization expansion, storage modernization, or low-latency application performance, this adapter provides a dependable foundation for scalable networking success. Its combination of 25GbE bandwidth, intelligent hardware offloads, SFP28 flexibility, and enterprise-grade reliability makes it an ideal choice for businesses seeking efficient and future-ready Ethernet connectivity.