Brand: NVIDIA Mellanox · SKU: MCX4121A-ACAT · MPN: MCX4121A-ACAT · Category: Networking
The NVIDIA Mellanox ConnectX-4 Lx EN (MCX4121A-ACAT) is a high-performance 25Gb/s Ethernet network interface card designed for virtualized infrastructure, cloud computing, and high-performance data centers. It features dual SFP28 ports and a PCIe 3.0 x8 host interface. The adapter delivers sub-microsecond latency and a 75 million packets per second message rate. It includes native hardware support for RDMA over Converged Ethernet (RoCE), Ethernet stateless offload engines, Overlay Networks, and NVIDIA GPUDirect technology. Its low power consumption and advanced congestion control make it an ideal choice for scaling compute and storage racks efficiently.
| Offloads | TCP/UDP/IP Stateless Offload, LSO, LRO, Checksum Offload |
|---|---|
| Data Rate | 25GbE |
| Form Factor | Low-Profile / Stand-up |
| RDMA Support | RoCE v1/v2 |
| Bus Interface | PCI Express 3.0 x8 |
| Number of Ports | 2 x SFP28 |
| Power Consumption | 8W (Typical) / 15W (Max) |
| Warranty | 3 Years |
| Weight | 0.4 lbs |
| Dimensions | 167.7mm x 68.9mm |
ConnectX-4 Lx EN Ethernet adapter cards provide a cost-effective and flexible solution for Web 2.0, cloud, data analytics, and storage platforms. By offloading data movement from the CPU, it allows for higher server utilization and application productivity while reducing total cost of ownership (TCO).
Yes, this NVIDIA Mellanox ConnectX-4 Lx EN 25GbE Dual-Port SFP28 Network Interface Card (MCX4121A-ACAT) is 100% genuine NVIDIA Mellanox hardware. All our products are verified by certified technicians and come with clean serial numbers ready for service contract registration.
This NVIDIA Mellanox ConnectX-4 Lx EN 25GbE Dual-Port SFP28 Network Interface Card includes our standard 3-Year Warranty covering all manufacturing defects. We also offer advanced replacement options for minimal downtime.
We offer free ground shipping which typically takes 3-5 business days. Expedited shipping options are available at checkout for faster delivery.
Yes, we have a 30-day return policy on all products. Restocking fees may apply for opened items. Please see our return policy for complete details.
Please check the specifications tab for detailed compatibility information. Our technical team is available to assist with compatibility questions for the MCX4121A-ACAT.