20NJD Dell Refurbished ConnectX-4 25GbE 2 Port Adapter In Stock

Dell 20NJD ConnectX-4 25GbE 2-Port Adapter Refurbished – In Stock

The Dell 20NJD refurbished dual-port 25GbE network adapter is a high-performance solution designed to meet the demands of modern enterprise data centres and virtualised environments. Powered by Mellanox’s ConnectX-4 LX chipset, this PCIe adapter offers exceptional speed, scalability, and efficiency at a fraction of the cost of new hardware.

Ideal for Dell PowerEdge servers, this card delivers up to 50Gbps total throughput via two 25GbE SFP28 ports, allowing for accelerated connectivity in high-density compute or storage clusters. With full support for RDMA, VLAN tagging, LACP, and jumbo frames, the 20NJD adapter ensures low-latency data transfers and optimised network performance.

Each unit is professionally refurbished, tested, and quality-checked, offering reliable performance and extended usability in demanding IT environments.

Key Features

• Dual-port 25GbE SFP28 connectivity
• PCI Express 3.0 x8 host interface
• Based on Mellanox ConnectX-4 LX chipset (CX4121C)
• Low-profile design with standard and half-height bracket options
• RDMA (RoCE), VLAN support, and Energy Efficient Ethernet
• Ideal for Dell PowerEdge servers including R640, R740, C4140, and others

Technical Specifications

• Part Number: 20NJD
• Ports: 2 x 25GbE SFP28
• Interface: PCIe 3.0 x8 (backwards compatible with PCIe 2.0)
• Form Factor: Low-profile (bracket included)
• Chipset: Mellanox ConnectX-4 LX (CX4121C)
• Protocols: TCP/IP, UDP, VLAN, LACP, RDMA, Jumbo Frames
• Compatibility: Supports major Dell PowerEdge systems
• Data Rate: Up to 25Gbps per port, 50Gbps total bandwidth

Why Choose the Dell 20NJD Adapter?

The Dell 20NJD adapter is engineered for high-throughput, low-latency networking, making it a strong choice for data centre upgrades, hyper-converged infrastructures, or cloud-ready environments. Its dual-port setup supports either redundancy or link aggregation, offering flexibility for enterprise-level deployments.

As a refurbished unit, it provides outstanding value without compromising on reliability or performance. Each adapter undergoes rigorous inspection and testing to ensure it meets industry standards, making it a dependable addition to any server configuration.

Use Case Scenarios

• Ideal for expanding network throughput in virtualised server environments
• Suited for storage-heavy workloads like iSCSI or NVMe over Fabrics
• Perfect for clustered or redundant networking configurations
• Compatible with a wide range of Dell server platforms

Order Today

Upgrade your network infrastructure with the Dell 20NJD refurbished 25GbE dual-port adapter. Enjoy dependable performance, high-speed connectivity, and excellent cost savings — all backed by professional refurbishment standards.