MCX631432AS-ADAB Nvidia 25GBE Dual-port SFP28 Adapter Card

Nvidia MCX631432AS-ADAB 25GbE OCP 3.0 Adapter Overview

The Nvidia MCX631432AS-ADAB ConnectX-6 Lx EN Adapter Card is a high-performance Ethernet Network Interface Card (NIC) engineered to deliver dependable, low-latency, and high-bandwidth connectivity for modern enterprise infrastructures. Designed with advanced networking capabilities, this OCP 3.0 adapter supports dual-port 25GbE Ethernet connectivity, making it an excellent solution for cloud computing, virtualization, software-defined networking (SDN), enterprise servers, edge computing, and large-scale data centers.

Powered by the Nvidia ConnectX-6 Lx architecture, this network adapter combines outstanding throughput, efficient packet processing, and intelligent networking acceleration. The PCI Express 4.0 x8 host interface provides exceptional bandwidth between the server and network, while Secure Boot technology enhances platform integrity during startup. Featuring dual SFP28 ports and host management capabilities, the adapter offers flexible deployment for organizations seeking secure, scalable, and energy-efficient networking solutions.

General Information of Nvidia MCX631432AS-ADAB

• Manufacturer: Nvidia
• Model Number: MCX631432AS-ADAB
• Product Family: ConnectX-6 Lx Ethernet Adapter
• Device Type: Network Interface Card (NIC)

Hardware Specifications

• Form Factor: Open Compute Project (OCP 3.0) Mezzanine Card
• Host Interface: PCI Express 4.0 x8
• Network Ports: Dual SFP28
• Maximum Data Rate: 25GbE per port
• Bracket: Thumbscrew Pull Tab
• Host Management: Supported
• Secure Boot: Enabled
• Crypto Support: No Crypto

Dual-Port 25GbE Performance

• Up to 25 Gbps transmission speed on each port
• Higher aggregate bandwidth for demanding workloads
• Improved network resilience through redundant connections
• Excellent scalability for growing infrastructures

Benefits of PCIe Gen4 Connectivity

• Faster server-to-network communication
• Reduced latency for mission-critical applications
• Improved overall system responsiveness
• Higher bandwidth for modern processors
• Excellent compatibility with next-generation enterprise servers

Advantages of OCP 3.0

• Optimized server integration
• Space-efficient hardware deployment
• Enhanced airflow and cooling efficiency
• Simplified maintenance procedures
• Ideal for hyperscale cloud infrastructure

Benefits of SFP28 Technology

• Flexible fiber optic deployment
• Support for direct attach copper cables
• Easy network upgrades
• Reduced power consumption
• Reliable high-speed Ethernet communication

Management Advantages

• Improved hardware monitoring
• Simplified infrastructure management
• Enhanced operational efficiency
• Better server lifecycle management
• Reduced administrative workload

Secure Boot Benefits

• Firmware authenticity verification
• Protection against unauthorized code
• Enhanced server security
• Improved infrastructure trust
• Greater compliance with enterprise security policies

Nvidia MCX631432AS-ADAB ConnectX-6 LX EN Adapter Card

The Nvidia MCX631432AS-ADAB ConnectX-6 LX EN Adapter Card is a high-performance Ethernet networking solution engineered to support modern enterprise, cloud, virtualization, and hyperscale computing environments. Featuring dual-port 25GbE connectivity through SFP28 interfaces, PCIe 4.0 x8 host connectivity, OCP 3.0 compatibility, secure boot technology, integrated host management capabilities, and a thumbscrew pull-tab bracket for simplified installation, this adapter delivers a balanced combination of bandwidth, reliability, efficiency, and advanced infrastructure security. Organizations seeking to upgrade from legacy 10GbE networking while maintaining exceptional application responsiveness benefit from the advanced capabilities integrated into the ConnectX-6 LX platform.

Purpose-built for data centers, enterprise servers, virtualization clusters, software-defined networking, hyperconverged infrastructure, cloud-native applications, storage networking, and edge computing deployments, the Nvidia ConnectX-6 LX family offers exceptional Ethernet acceleration with low latency and outstanding packet processing performance. The MCX631432AS-ADAB model supports demanding workloads while reducing CPU overhead through intelligent hardware acceleration technologies.

Advanced ConnectX-6 LX Ethernet Architecture

Designed for High-Efficiency Network Performance

The ConnectX-6 LX architecture represents a significant advancement in Ethernet networking technology by combining intelligent packet processing, hardware offloading, virtualization acceleration, and high-speed communication into a compact OCP 3.0 adapter. Unlike traditional network interface cards, this adapter is optimized to handle increasingly demanding workloads generated by artificial intelligence, cloud infrastructure, containerized applications, virtualization platforms, distributed storage, and enterprise databases.

The dual-port 25GbE configuration enables organizations to significantly increase network throughput while reducing congestion between compute nodes, storage arrays, application servers, and network infrastructure. The PCI Express 4.0 x8 interface further maximizes communication between the adapter and host processor, minimizing bottlenecks that can occur in data-intensive environments.

Optimized for Modern Data Center Infrastructure

Modern enterprise data centers require networking hardware capable of supporting continuous workload growth without sacrificing stability or efficiency. The Nvidia MCX631432AS-ADAB adapter is engineered to meet these demands by delivering high-speed Ethernet connectivity that scales with evolving business requirements. Whether supporting virtualization clusters, private cloud deployments, or enterprise storage solutions, the adapter provides consistent network performance across diverse computing environments.

Dual-Port 25GbE SFP28 Connectivity

High-Speed Ethernet Communication

The inclusion of dual SFP28 ports enables simultaneous 25 Gigabit Ethernet communication, allowing organizations to separate application traffic, storage communication, backup operations, virtualization networking, or redundant network paths. This flexibility supports improved network design while increasing bandwidth availability across multiple workloads.

SFP28 technology offers substantial performance improvements compared to earlier 10GbE solutions while maintaining compatibility with enterprise-grade optical transceivers and direct attach copper cables commonly deployed throughout modern data centers. The increased bandwidth helps reduce application latency while accelerating large file transfers, virtual machine migrations, storage replication, and distributed computing tasks.

Scalable Ethernet Deployment

The adapter integrates seamlessly into enterprise Ethernet infrastructures where scalable network expansion is required. Organizations can deploy multiple adapters across server clusters to create resilient, high-bandwidth networking environments capable of supporting rapidly growing application demands.

PCI Express 4.0 x8 Performance

High-Bandwidth Host Connectivity

The PCIe 4.0 x8 interface significantly increases communication bandwidth between the adapter and host server. This expanded bandwidth ensures that high-speed Ethernet traffic is efficiently processed without creating bottlenecks between network operations and system memory.

PCIe Gen4 technology doubles the available throughput compared to earlier PCIe generations, enabling servers to maximize utilization of dual 25GbE network connections during demanding enterprise workloads. Applications involving artificial intelligence, virtualization, storage networking, cloud computing, analytics, and database processing all benefit from improved host communication performance.

Improved Resource Utilization

Efficient PCIe communication enables processors to devote additional computational resources to business applications rather than network processing. Intelligent hardware acceleration further reduces CPU utilization while improving overall server efficiency and application responsiveness.

OCP 3.0 Form Factor Advantages

Purpose-Built for Next-Generation Servers

The OCP 3.0 specification has become an important standard within hyperscale and enterprise server deployments. The Nvidia MCX631432AS-ADAB adapter is specifically designed for Open Compute Project server platforms, allowing seamless integration into modern rack infrastructure while supporting standardized deployment practices.

The OCP 3.0 form factor improves airflow, simplifies serviceability, enhances cable management, and optimizes internal server layouts. Organizations implementing large-scale server deployments benefit from standardized networking hardware that accelerates installation and reduces infrastructure complexity.

Enhanced Infrastructure Standardization

Standardized OCP 3.0 networking hardware simplifies procurement, deployment, maintenance, and future upgrades across enterprise and cloud environments. This consistency reduces operational overhead while improving long-term infrastructure management.

Integrated Host Management Capabilities

Improved Server Administration

One of the distinguishing features of the Nvidia MCX631432AS-ADAB adapter is integrated host management support. Host management enables administrators to monitor network hardware, retrieve diagnostic information, manage firmware, and improve infrastructure visibility without disrupting application workloads.

Enhanced management functionality contributes to faster troubleshooting, improved system monitoring, and simplified lifecycle management across enterprise environments containing hundreds or thousands of servers.

Centralized Infrastructure Visibility

Host management capabilities support centralized monitoring platforms that provide administrators with valuable operational insights into adapter health, connectivity status, firmware versions, and network performance metrics. These management features contribute to improved reliability and proactive maintenance planning.

Secure Boot Technology

Strengthening Network Security

Enterprise organizations increasingly prioritize infrastructure security throughout every layer of their computing environments. Secure Boot functionality within the Nvidia ConnectX-6 LX adapter helps establish trusted hardware initialization by validating firmware integrity during the startup process.

This security mechanism reduces the risk of unauthorized firmware modifications while helping organizations comply with modern cybersecurity frameworks and enterprise security policies. Secure Boot enhances confidence that networking hardware operates using trusted firmware throughout production deployments.

Trusted Hardware Foundation

By verifying firmware authenticity before execution, Secure Boot creates a stronger hardware security foundation that supports regulated industries, financial institutions, healthcare organizations, government agencies, research facilities, and enterprise environments with strict compliance requirements.

No Crypto Configuration Benefits

Simplified Global Deployment

The No Crypto configuration allows organizations to deploy networking hardware in environments where cryptographic functionality may be restricted due to regional regulations or organizational procurement policies. This configuration supports broader deployment flexibility while maintaining the performance capabilities expected from the ConnectX-6 LX platform.

Organizations operating across multiple international locations often require networking solutions that align with varying regulatory environments. The No Crypto version provides deployment versatility without compromising networking efficiency.

Hardware Offloading Technologies

Reduced CPU Utilization

The ConnectX-6 LX platform incorporates intelligent hardware acceleration that transfers networking tasks from the host processor to dedicated adapter hardware. This architecture minimizes processor utilization during high-volume network operations while improving application performance.

Offloading capabilities accelerate checksum calculations, segmentation, packet processing, receive-side scaling, transmit operations, virtualization networking, and other networking functions that traditionally consume valuable CPU resources.

Improved Application Responsiveness

Lower processor overhead allows enterprise applications, virtual machines, databases, artificial intelligence workloads, and analytics platforms to access additional computing resources. This results in improved responsiveness and greater infrastructure efficiency across demanding production environments.

Virtualization Optimization

Designed for Hypervisor Environments

Virtualized data centers require network adapters capable of supporting numerous virtual machines while maintaining predictable network performance. The Nvidia MCX631432AS-ADAB adapter is optimized for virtualization platforms that demand low latency, efficient packet delivery, and intelligent workload isolation.

Virtual machine migration, distributed resource scheduling, dynamic workload balancing, and software-defined networking all benefit from the advanced acceleration capabilities integrated into the ConnectX-6 LX architecture.

Support for Multi-Tenant Infrastructure

Enterprise hosting providers and private cloud operators benefit from efficient resource sharing across multiple tenants while maintaining consistent network performance and workload isolation. Hardware acceleration helps maintain predictable application responsiveness even during periods of increased network utilization.

Cloud Computing Performance

Supporting Cloud-Native Applications

Cloud-native software architectures depend on fast, scalable networking between application components, storage systems, container platforms, orchestration services, and distributed databases. The dual-port 25GbE architecture enables reliable communication across highly dynamic cloud environments.

Microservices, Kubernetes clusters, container orchestration platforms, and distributed computing frameworks benefit from reduced latency and improved bandwidth made possible by the ConnectX-6 LX networking platform.

Storage Networking Acceleration

Efficient Data Movement

Storage-intensive applications require networking hardware capable of transporting large amounts of data with minimal delay. The Nvidia MCX631432AS-ADAB adapter supports efficient communication between servers and storage infrastructure, enabling rapid backup operations, storage replication, database synchronization, and large-scale file transfers.

Organizations utilizing network-attached storage, software-defined storage, distributed storage platforms, or enterprise backup systems benefit from higher throughput and improved storage communication efficiency.

Enterprise Reliability

Built for Continuous Operation

Enterprise networking hardware must maintain reliable performance under continuous workloads. The Nvidia ConnectX-6 LX adapter is engineered for long-term stability within mission-critical environments where uninterrupted connectivity is essential for business operations.

Robust engineering, intelligent thermal management, firmware stability, and enterprise-class component selection contribute to dependable operation throughout demanding production deployments.

Reduced Downtime

Reliable hardware minimizes service interruptions while supporting business continuity across virtualization clusters, cloud infrastructure, enterprise databases, storage environments, and mission-critical business applications.

Ideal Enterprise Deployment Scenarios

Versatile Networking Solution

The Nvidia MCX631432AS-ADAB ConnectX-6 LX EN Adapter Card is suitable for enterprise application servers, virtualization clusters, hyperconverged infrastructure, cloud platforms, software-defined networking environments, storage servers, edge computing systems, research laboratories, artificial intelligence infrastructure, financial computing platforms, media production environments, telecommunications networks, and high-performance computing clusters.

Future-Ready Infrastructure Investment

As organizations continue migrating toward bandwidth-intensive applications, cloud-native architectures, distributed computing, and increasingly virtualized environments, the Nvidia MCX631432AS-ADAB ConnectX-6 LX EN Adapter Card provides a scalable networking platform that combines dual-port 25GbE Ethernet connectivity, PCIe 4.0 x8 performance, OCP 3.0 compatibility, integrated host management, Secure Boot protection, enterprise-grade reliability, intelligent hardware acceleration, simplified maintenance through its thumbscrew pull-tab bracket, and advanced networking capabilities designed to support both current workloads and future infrastructure expansion.