• Dual-port 25GbE network card delivering exceptional throughput and sub-microsecond latency
• Hardware-accelerated RDMA over Converged Ethernet (RoCE) for CPU offloading
• Advanced virtualization support with SR-IOV technology enabling up to 256 virtual functions
• Comprehensive overlay network offloading for NVGRE, VXLAN, and GENEVE protocols
• Multi-host capability allowing up to four independent servers to share a single network card

The Mellanox ConnectX-4 Lx EN MCX4121A-ACAT represents a high-performance Ethernet network card designed for modern data center environments. This dual-port 25GbE NIC card delivers exceptional networking performance while reducing CPU overhead through advanced hardware acceleration technologies. The network card supports flexible deployment options with compatibility across various server platforms and operating systems.

• Dual-port SFP28 interfaces supporting 25, 10, and 1 Gigabit Ethernet speeds
• PCIe 3.0 x8 host interface with backward compatibility
• Hardware-based RDMA over Converged Ethernet (RoCE) support
• SR-IOV virtualization with up to 256 virtual functions
• Overlay network encapsulation/decapsulation offload
• Multi-host technology for shared adapter utilization

This advanced network card incorporates several cutting-edge technologies including RDMA over Converged Ethernet (RoCE) for low-latency communication, hardware-based I/O virtualization through SR-IOV, and sophisticated overlay network processing. The NIC card also features Mellanox Multi-Host technology, enabling multiple servers to share a single network interface while maintaining performance isolation and security.

The MCX4121A-ACAT network card is ideally suited for cloud computing infrastructure, hyper-converged systems, database servers, and high-performance computing clusters. Its low-latency characteristics make it particularly valuable for financial trading platforms, AI/ML workloads, and storage area networks where rapid data transfer is critical. This NIC card delivers outstanding performance in virtualized environments and software-defined data center deployments.

Compared to conventional network cards, the MCX4121A-ACAT delivers significantly lower latency through hardware-accelerated RDMA technology, reducing application response times by up to 90%. The NIC card's advanced offloading capabilities decrease CPU utilization by 80% or more, freeing processor resources for application workloads. This network card also provides superior ROI through multi-host technology, enabling consolidation of network infrastructure across multiple servers.

We provide comprehensive technical support, including configuration guidance, driver installation assistance, and performance optimization recommendations. Our experienced team offers 24/7 consultation services to ensure seamless integration of this network card into your infrastructure. All products include standard manufacturer warranty with optional extended coverage available.

Q: What operating systems are supported by this network card?
A: The MCX4121A-ACAT NIC card supports Windows Server, Linux distributions, VMware ESXi, and FreeBSD with official drivers available.

Q: Can this network card operate at different speeds on each port?
A: Yes, each port can independently operate at 25GbE, 10GbE, or 1GbE speeds based on connected equipment and transceivers.

Q: Does this NIC card require special switches for RDMA functionality?
A: While RDMA works best with Data Center Bridging (DCB) enabled switches, RoCE can operate on standard Ethernet networks with proper configuration.

Ensure proper cooling airflow around the network card during operation. Use qualified SFP28 transceivers and cables for optimal performance. Verify PCIe slot compatibility and available power budget. Update to the latest firmware and drivers before deployment. For virtualization environments, enable SR-IOV in BIOS settings and hypervisor configuration.

With over a decade of industry experience, our company maintains extensive manufacturing capabilities supported by a robust technical team. We have established long-term relationships with numerous global clients while accumulating substantial expertise in networking solutions. Our product portfolio includes genuine Mellanox, Ruckus, Aruba, and Extreme networking equipment.

We stock over 10 million dollars in inventory, ensuring immediate availability of network cards, switches, wireless access points, and related components. Our professional sales and technical teams provide 24/7 customer support, earning us an exceptional reputation in international markets. We are committed to delivering competitive pricing without compromising on product quality or service excellence.