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Home Networking Networking Cards Mellanox MCX4121A-ACAT ConnectX-4 Lx 25GbE Dual-Port NIC

Mellanox MCX4121A-ACAT ConnectX-4 Lx 25GbE Dual-Port NIC

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High-performance 25GbE dual-port network interface card designed for data centers, virtualization, and cloud workloads with low latency and PCIe 3.0 x8 support.

OVERVIEW

  • The Mellanox ConnectX-4 Lx MCX4121A-ACAT is a high-performance dual-port 25 Gigabit Ethernet network interface card designed for modern data center, cloud, and enterprise computing environments. Built on PCIe 3.0 x8 architecture, it delivers exceptional throughput, ultra-low latency, and efficient CPU offloading.
  • This adapter supports SFP28 connectivity and is optimized for virtualization, software-defined networking (SDN), and high-performance computing (HPC) workloads. It enables scalable network performance for servers handling intensive traffic, distributed applications, and cloud-native architectures.

USE CASES

  • Data center high-speed networking
  • Cloud infrastructure and virtualization
  • High-performance computing (HPC) environments
  • Software-defined networking (SDN) deployments
  • Enterprise server connectivity upgrades
  • Storage networking (iSCSI, NVMe over Fabrics)
  • AI/ML workload networking acceleration

KEY FEATURES

  • Dual-port 25GbE high-speed connectivity
  • SFP28 optical interface support
  • PCIe 3.0 x8 host interface
  • Low latency and high throughput design
  • Advanced hardware offload capabilities
  • Optimized for virtualization environments
  • Efficient CPU utilization for server workloads
  • Scalable cloud and data center architecture support

TECHNICAL SPECIFICATIONS

  • Brand: Mellanox
  • Model: MCX4121A-ACAT
  • Product Type: Network Interface Card (NIC)
  • Brand: Mellanox (NVIDIA Networking)
  • Ports: Dual Port 25GbE
  • Interface: SFP28
  • Bus Type: PCIe 3.0 x8
  • Speed: 25 Gigabit Ethernet
  • Form Factor: Full-height / Tall bracket
  • Workloads: Cloud, Virtualization, HPC
  • Offload Features: TCP/UDP/IP acceleration
  • Deployment: Data Center / Enterprise Servers

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