49J96 Dell 1-Port CX75210AA Connectx-7 400Gbs NDR Infiniband PCIE 5.0 Adapter

Overview of DELL 49J96 400Gbs 1-Port Adapter

The DELL 49J96 NVIDIA ConnectX-7 CX75210AA single-port host channel adapter (HCA) and network interface card (NIC) is engineered for next-generation high-performance computing, AI clusters, and data-intensive enterprise workloads. Designed around NVIDIA’s advanced ConnectX-7 architecture, this PCIe 5.0 x16 adapter delivers ultra-low latency, extreme throughput, and reliable scalability for modern data centers.

General Information

• Manufacturer: Dell 
• Part Number: 49J96 
• Product Type: Network Adapter

Technical Specifications

• Model: CX75210AA 
• Protocol: InfiniBand
• Data Rate: 400Gb/s NDR
• Ports: 1 × OSFP
• Interface: PCIe 5.0 x16
• Bracket: Full Height

The Dell 49J96 ConnectX-7 400Gbps PCIe 5.0 Adapter

The Dell 49J96 NVIDIA 1-Port ConnectX-7 CX75210AA 400Gbps NDR InfiniBand PCIe 5.0 x16 OSFP HCA/NIC represents a high-performance networking adapter category engineered for next-generation data centers, AI fabrics, hyperscale cloud infrastructures, and high-performance computing environments. This category focuses on advanced host channel adapters (HCA) and network interface cards (NIC) that deliver extreme bandwidth, ultra-low latency, and intelligent offload capabilities required by modern workloads such as artificial intelligence, machine learning, deep learning, big data analytics, and high-frequency trading.Products within this category integrate NVIDIA’s ConnectX-7 architecture with Dell enterprise-grade validation, providing a robust solution for InfiniBand and Ethernet convergence, scalable GPU interconnects, and PCIe Gen5 host connectivity. These adapters are optimized for OSFP form factor modules, full-height (FH) PCIe slots, and modern server platforms demanding maximum throughput and efficiency.

ConnectX-7 Architecture and Technology Foundation

NVIDIA ConnectX-7 CX75210AA Chipset

The ConnectX-7 CX75210AA controller is designed to support up to 400Gbps networking speeds, leveraging NVIDIA’s latest networking silicon innovations. This chipset introduces enhanced packet processing pipelines, advanced congestion control, and hardware-accelerated offloads that reduce CPU overhead while increasing application performance.In this category, the chipset supports both InfiniBand NDR and high-speed Ethernet protocols, allowing flexible deployment across diverse network topologies. The architecture enables seamless scaling for compute clusters while maintaining deterministic latency and predictable throughput.

400Gbps NDR InfiniBand Performance

400Gbps NDR (Next Data Rate) InfiniBand technology delivers unprecedented bandwidth for data-intensive workloads. Adapters in this category are built to sustain high message rates and large data transfers without bottlenecks, ensuring efficient GPU-to-GPU, node-to-node, and storage-to-compute communications.

PCIe 5.0 x16 Host Interface Capabilities

Next-Generation PCIe Gen5 Bandwidth

The PCIe 5.0 x16 interface doubles the bandwidth of PCIe Gen4, enabling seamless data transfer between the host CPU, GPU accelerators, and the network adapter. This is critical for eliminating I/O bottlenecks in systems running distributed training, inference pipelines, and large-scale simulations.

Full-Height PCIe Form Factor Design

The full-height (FH) PCIe design supports enterprise and data center server configurations, offering enhanced thermal performance, mechanical stability, and compatibility with standard rack-mounted systems. This design allows for efficient airflow management and reliable operation under sustained high loads.

OSFP Interface and Optical Connectivity

OSFP High-Density Port Design

The OSFP (Octal Small Form-factor Pluggable) interface is engineered for ultra-high-speed networking, supporting 400Gbps data rates with improved power efficiency and signal integrity. Adapters in this category utilize OSFP ports to connect to advanced optical or active copper transceivers for short- and long-reach deployments.

Optical and Direct Attach Compatibility

This category supports a wide range of OSFP-based optical transceivers and active cables, enabling flexible interconnect options across racks, rows, and data halls. Compatibility with InfiniBand NDR optics ensures consistent performance and interoperability within NVIDIA-based fabrics.

Multi-Protocol Networking Support

Adapters in the Dell 49J96 ConnectX-7 category are designed to support both InfiniBand and Ethernet protocols. This convergence allows organizations to deploy a unified networking solution that can adapt to evolving workload requirements without hardware replacement.

Thermal and Power Efficiency 

Advanced power management features and efficient thermal design allow these adapters to operate reliably in dense server environments. Intelligent power scaling ensures optimal performance while minimizing energy consumption.

High-Performance Networking with ConnectX-7

Built on the CX75210AA controller, the DELL 49J96 adapter supports 400Gb/s NDR InfiniBand, enabling rapid data movement across compute nodes. This makes it an ideal choice for GPU-accelerated servers, cloud infrastructure, and large-scale parallel processing environments.

Advanced InfiniBand NDR Connectivity

400Gb/s Data Transfer Capabilities

With a data transfer rate of up to 400Gbps, this single-port OSFP adapter ensures consistent, high-speed communication between servers and switches. The InfiniBand protocol minimizes latency while maximizing throughput, making it suitable for real-time analytics and high-density computing fabrics.

OSFP Single-Port Design

Efficient Port Configuration

The DELL 49J96 features a single OSFP port, providing streamlined connectivity while supporting high-density cabling solutions. The OSFP form factor is engineered for superior thermal performance and reliable signal integrity at 400Gb/s speeds.

Build and Compatibility

Full-Height Bracket Design

Equipped with a full-height bracket, the DELL 49J96 adapter is compatible with standard enterprise servers and rack-mounted systems. Its robust construction ensures long-term reliability in demanding data center environments.

Long-Term Scalability and Upgrade Path

Organizations investing in Dell 49J96 NVIDIA ConnectX-7 HCA/NIC solutions gain a scalable foundation that can adapt to evolving networking standards and application requirements without frequent hardware refresh cycles.