MCX516A-CCAT Mellanox ConnectX-5 - Network Adapter PCIe 3.0 X16 - 100GbE QSFP X 2

Mellanox MCX516A-CCAT ConnectX-5 Ethernet Adapter

Product Overview

The Mellanox MCX516A-CCAT ConnectX-5 EN 100 Gigabit Ethernet Adapter is a high-performance PCI Express network interface card engineered for modern enterprise data centers, cloud computing environments, virtualization platforms, high-performance computing (HPC), and AI-driven workloads. Featuring dual 100GbE QSFP28 ports, this advanced Ethernet adapter delivers ultra-fast network throughput, exceptional bandwidth, and low-latency connectivity for mission-critical applications.

Designed to maximize server efficiency and accelerate data-intensive workloads, the Mellanox ConnectX-5 EN adapter supports multiple Ethernet speeds, making it a flexible networking solution for organizations planning scalable infrastructure upgrades. Its PCIe 3.0 x16 interface ensures high-speed communication between the server and network while reducing bottlenecks in demanding enterprise environments.

General Product Information

• Manufacturer: Mellanox
• Model Number: MCX516A-CCAT
• Product Family: ConnectX-5 EN
• Product Category: Ethernet Network Adapter
• Device Type: Plug-in Network Interface Card (NIC)

Technical Specifications

Bus Architecture

• PCI Express 3.0
• x16 lane interface
• High-bandwidth server connectivity
• Enterprise-class expansion card

Port Configuration

• 2 × QSFP28 network ports
• 100 Gigabit Ethernet support
• Enterprise-grade wired connectivity
• Reliable high-speed network communication

Supported Network Protocols

• Gigabit Ethernet (1GbE)
• 10 Gigabit Ethernet (10GbE)
• 25 Gigabit Ethernet (25GbE)
• 40 Gigabit Ethernet (40GbE)
• 50 Gigabit Ethernet (50GbE)
• 100 Gigabit Ethernet (100GbE)

High-Speed Data Transfer Performance

• Ultra-fast 100 Gbps bandwidth
• Reduced network latency
• Efficient packet processing
• Improved application performance
• Enhanced server scalability

Ideal Deployment Environments

• Enterprise data centers
• Cloud computing platforms
• High-performance computing (HPC)
• Artificial intelligence and machine learning
• Virtualization servers
• Software-defined networking
• Large-scale storage networks
• Database clusters
• Media streaming infrastructure
• Financial trading platforms

Benefits of Choosing the Mellanox MCX516A-CCAT

• Enterprise-grade networking performance
• Dual-port 100GbE connectivity
• Flexible multi-speed Ethernet support
• PCIe 3.0 x16 high-bandwidth interface
• Scalable infrastructure compatibility
• Low-latency network communication
• Excellent performance for AI, HPC, and virtualization
• Reliable wired Ethernet connectivity
• Optimized for modern server platforms
• High-speed data transmission for mission-critical workloads

Product Highlights

• Original Mellanox MCX516A-CCAT ConnectX-5 EN network adapter
• Dual-port 100 Gigabit Ethernet connectivity
• Supports QSFP28 high-speed networking
• PCI Express 3.0 x16 host interface
• Up to 100 Gbps data transfer rate per port
• Optimized for cloud, virtualization, AI, and HPC environments
• Low-latency, high-bandwidth enterprise networking
• Supports multiple Ethernet speeds for flexible deployment

Mellanox MCX516A-CCAT 100-Gigabit Ethernet Adapter

The Mellanox MCX516A-CCAT ConnectX-5 EN 100-Gigabit Ethernet Adapter is engineered to meet the ever-increasing demands of modern enterprise data centers, cloud computing environments, virtualization infrastructures, high-performance computing clusters, storage networks, artificial intelligence platforms, and large-scale business applications. As organizations continue to process enormous volumes of data with minimal latency expectations, the need for reliable, high-bandwidth network connectivity becomes essential. This network adapter delivers outstanding Ethernet performance by combining advanced hardware architecture, intelligent traffic acceleration technologies, and enterprise-grade reliability into a compact PCI Express solution suitable for demanding production environments.

Designed with the renowned ConnectX-5 Ethernet architecture, the MCX516A-CCAT provides outstanding throughput while maintaining exceptionally low CPU utilization. By offloading networking tasks from the host processor, the adapter allows servers to dedicate more computing resources toward applications rather than packet processing. This capability significantly enhances server efficiency, application responsiveness, and infrastructure scalability across numerous deployment scenarios.

Modern organizations require network adapters capable of supporting cloud-native applications, virtual machines, software-defined networking, distributed databases, machine learning workloads, and latency-sensitive financial applications. The Mellanox MCX516A-CCAT fulfills these requirements by integrating advanced networking capabilities that optimize communication between servers, storage systems, and network switches while maintaining exceptional stability under sustained workloads.

Advanced ConnectX-5 EN Architecture

Designed for Modern Enterprise Infrastructure

The ConnectX-5 EN architecture represents a major advancement in Ethernet networking by delivering intelligent packet processing, hardware acceleration, and efficient bandwidth utilization. Rather than functioning solely as a conventional network interface card, the MCX516A-CCAT serves as an intelligent networking accelerator capable of reducing communication bottlenecks across enterprise infrastructures.

Organizations deploying virtualization platforms, private clouds, public cloud environments, container orchestration platforms, and distributed storage solutions benefit significantly from the adapter's intelligent architecture. Hardware-based networking acceleration enables applications to communicate efficiently while minimizing latency and maximizing throughput during peak operational periods.

PCI Express High-Speed Communication

The adapter utilizes a high-speed PCI Express interface that provides substantial bandwidth between the network adapter and the host server. This high-performance connection ensures that incoming and outgoing network traffic can be processed efficiently without creating bottlenecks within the server architecture. PCI Express connectivity enables organizations to fully leverage 100 Gigabit Ethernet capabilities while maintaining balanced system performance.

The high-bandwidth PCIe interface is particularly beneficial for enterprise servers handling simultaneous workloads involving virtualization, storage traffic, application delivery, database replication, and backup operations.

100-Gigabit Ethernet Performance

High-Speed Data Transmission

One of the defining characteristics of the Mellanox MCX516A-CCAT ConnectX-5 EN adapter is its ability to provide 100 Gigabit Ethernet connectivity. This exceptional bandwidth enables enterprises to move massive datasets rapidly between servers, storage systems, and network infrastructure while minimizing delays associated with traditional networking technologies.

Organizations handling large multimedia files, scientific research datasets, engineering simulations, medical imaging, financial transactions, and AI model training require networking solutions capable of supporting continuous high-volume data movement. The MCX516A-CCAT addresses these challenges by delivering sustained network performance across demanding environments.

Consistent Low-Latency Networking

Latency plays a critical role in application responsiveness. The ConnectX-5 architecture minimizes transmission delays through hardware optimization, efficient packet handling, intelligent queue management, and advanced Ethernet acceleration technologies. Reduced latency improves user experiences while supporting applications requiring immediate data exchange between distributed systems.

Applications such as financial trading platforms, cloud services, distributed databases, online transaction processing, and high-performance analytics benefit significantly from consistently low communication latency.

Enterprise Data Center Optimization

Supporting Large-Scale Server Deployments

Enterprise data centers often contain thousands of interconnected servers supporting diverse workloads simultaneously. The Mellanox MCX516A-CCAT is specifically engineered to integrate seamlessly into these environments by providing reliable, scalable Ethernet connectivity capable of supporting extensive server infrastructures.

High-density server deployments benefit from the adapter's efficient hardware design, allowing administrators to maximize rack utilization while maintaining excellent networking performance throughout the infrastructure.

Cloud Infrastructure Acceleration

Private cloud, hybrid cloud, and public cloud environments depend upon fast communication between virtual machines, storage clusters, orchestration platforms, and management services. The MCX516A-CCAT enhances cloud infrastructure by accelerating network communication while minimizing CPU overhead.

This hardware-assisted networking enables cloud providers and enterprise IT departments to increase virtual machine density, improve workload responsiveness, and maintain predictable network performance across dynamic cloud environments.

Virtualization Performance Enhancement

Efficient Virtual Machine Networking

Virtualization technologies require network adapters capable of supporting numerous virtual machines simultaneously. The ConnectX-5 EN adapter provides advanced virtualization acceleration features that improve network efficiency while reducing resource contention between virtual workloads.

By handling many networking operations directly within hardware, the adapter allows hypervisors to allocate more processing resources toward application execution instead of network packet management.

Hardware Offload Technologies

Hardware offloading significantly reduces processor utilization by transferring networking functions from the server CPU to the adapter itself. This architecture enables servers to process larger numbers of virtual machines without experiencing excessive networking overhead.

Organizations operating virtualization clusters experience improved workload scalability, greater application consistency, and enhanced infrastructure efficiency through intelligent hardware acceleration.

Storage Networking Efficiency

Accelerating Data Storage Traffic

Modern storage environments generate enormous network traffic due to backup operations, replication, disaster recovery synchronization, distributed storage systems, and cloud storage services. The MCX516A-CCAT delivers the bandwidth necessary to support these demanding storage operations efficiently.

Fast Ethernet connectivity minimizes backup windows while enabling storage arrays and application servers to exchange information rapidly, thereby improving business continuity and operational efficiency.

Reliable Storage Connectivity

Enterprise storage environments require continuous, dependable communication between servers and storage devices. The ConnectX-5 EN architecture provides stable, reliable Ethernet connectivity capable of maintaining consistent performance during sustained storage operations involving large datasets.

Security and Network Reliability

Enterprise-Class Reliability

Business-critical infrastructure requires network adapters capable of operating continuously with exceptional stability. The Mellanox MCX516A-CCAT is designed to provide enterprise-grade reliability suitable for mission-critical applications where downtime can significantly impact business operations.

Its robust hardware architecture supports continuous operation under demanding workloads while maintaining predictable networking performance throughout extended deployment cycles.

Advanced Error Handling

Reliable networking extends beyond bandwidth alone. Intelligent error detection, packet verification, and hardware-based correction mechanisms help maintain data integrity during transmission, ensuring accurate communication across enterprise networks.

Scalability for Future Growth

Supporting Infrastructure Expansion

Organizations continually expand their computing resources as application demands increase. The MCX516A-CCAT provides networking capacity capable of supporting infrastructure growth without requiring immediate hardware replacement. Its high-bandwidth capabilities enable businesses to scale server deployments while maintaining network performance.

This long-term scalability makes the adapter an attractive investment for enterprises planning future expansion in virtualization, cloud computing, storage infrastructure, and high-performance computing.

Flexible Enterprise Integration

The adapter integrates into diverse server platforms and enterprise networking environments, simplifying deployment across heterogeneous infrastructures. Organizations can standardize networking hardware while maintaining compatibility with modern Ethernet ecosystems.

Network Offload and CPU Optimization

Reducing Processor Workload

Traditional network interfaces rely heavily upon host processors for packet handling, checksum calculations, segmentation, and protocol management. The ConnectX-5 EN architecture transfers many of these responsibilities into dedicated hardware components.

Reducing processor involvement enables servers to dedicate additional computational resources toward business applications, databases, virtualization hosts, analytics engines, and scientific computing workloads.

Improving Overall Server Efficiency

Server efficiency extends beyond raw processor speed. Intelligent networking acceleration reduces resource contention throughout the system, allowing storage, memory, processors, and networking components to operate harmoniously under demanding workloads.

Cloud-Native Application Performance

Containerized Workloads

Modern enterprises increasingly deploy applications using container orchestration platforms. These environments require rapid communication between distributed services operating across multiple physical servers. The MCX516A-CCAT provides low-latency networking that supports efficient communication between containers while maintaining excellent throughput during high-volume workloads.

Microservices Communication

Microservices architectures generate frequent network communication between distributed application components. High-speed Ethernet connectivity ensures these interactions occur efficiently, reducing response times while improving application scalability and user experience.

Energy-Efficient Network Operations

Optimized Hardware Design

Enterprise networking equipment must balance exceptional performance with operational efficiency. The ConnectX-5 EN architecture incorporates optimized hardware capable of delivering high-speed networking while maintaining responsible power utilization. Efficient operation contributes to reduced operational expenses within large-scale data centers.

Power-efficient networking becomes increasingly important as organizations deploy thousands of servers across multiple facilities, making hardware efficiency an essential component of infrastructure planning.

Deployment Across Multiple Industries

Financial Services

Financial organizations depend upon extremely fast network communication for transaction processing, algorithmic trading, risk analysis, fraud detection, and database synchronization. The MCX516A-CCAT provides the low-latency performance necessary to support these demanding applications.

Healthcare Infrastructure

Healthcare providers generate large quantities of medical imaging, patient records, laboratory results, and research information requiring rapid network access. High-speed Ethernet connectivity improves collaboration between healthcare systems while supporting reliable access to mission-critical information.

Research Institutions

Universities and scientific laboratories process extensive datasets generated by simulations, experiments, genomic research, climate modeling, and engineering analysis. The MCX516A-CCAT enables researchers to exchange information efficiently between computational resources while accelerating collaborative research initiatives.

Media Production

Video editing, animation, visual effects, broadcasting, and digital content creation involve enormous multimedia files requiring rapid movement between workstations and storage arrays. High-bandwidth Ethernet networking minimizes transfer delays while supporting collaborative creative workflows.

Long-Term Enterprise Investment

Reliable Networking for Business Continuity

The Mellanox MCX516A-CCAT ConnectX-5 EN 100-Gigabit Ethernet Adapter represents a strategic networking solution for organizations seeking exceptional Ethernet performance, enterprise reliability, advanced hardware acceleration, and long-term infrastructure scalability. Its intelligent architecture supports evolving workloads while maintaining outstanding operational consistency throughout demanding enterprise environments.

Future-Ready Ethernet Technology

As enterprise networking continues evolving toward increasingly distributed applications, cloud-native computing, artificial intelligence, high-performance storage, and software-defined infrastructure, the ConnectX-5 EN platform remains highly relevant by delivering advanced Ethernet capabilities capable of supporting next-generation workloads. Organizations investing in high-performance networking infrastructure benefit from a solution designed for longevity, operational efficiency, and sustained enterprise performance.