ConnectX-4 Lx EN 25GbE Mellanox Network Card Nic Interface MCX4121A-XCAT
Brand Name:Mellanox
Model Number:MCX4121A-XCAT
Minimum Order Quantity:1pcs
Delivery Time:Based on inventory
Payment Terms:T/T
Price:Negotiate
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Product Details
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Product Details
Mellanox ConnectX-4 Lx EN MCX4121A-XCAT: Enterprise Dual-Port Network Adapter Card
1. Product Overview
The Mellanox ConnectX-4 Lx EN MCX4121A-XCAT is an advanced dual-port Ethernet network card engineered for modern data center and enterprise applications. This high-performance NIC card delivers 10, 25, 40, and 50Gb/s connectivity through SFP28 interfaces, featuring comprehensive hardware offload capabilities that optimize network performance while reducing CPU overhead. Designed for cloud infrastructure, virtualization environments, and high-performance computing, this adapter provides a scalable solution for evolving network demands with exceptional reliability and efficiency.
2. Key Characteristics
- Dual SFP28 ports supporting auto-negotiation across multiple speeds
- PCIe 3.0 x8 host interface with full backward compatibility
- Hardware offload for RDMA over Converged Ethernet (RoCE)
- SR-IOV virtualization supporting up to 256 virtual functions
- Advanced tunneling protocol support for VXLAN, NVGRE, and GENEVE
- Multi-Host technology enabling resource sharing across servers
- Energy Efficient Ethernet compliance reducing power consumption
- Hardware-based security and isolation features
3. Core Technologies
This sophisticated network card incorporates Mellanox's innovative Multi-Host® technology, allowing multiple servers to connect to a single adapter, dramatically reducing infrastructure costs and complexity. The card features hardware-based overlay network encapsulation/decapsulation, GPUDirect® RDMA acceleration, and sophisticated traffic management with quality of service (QoS) controls. While the ConnectX-6 series offers higher maximum bandwidth, this adapter provides exceptional value for 10-50GbE applications with a robust feature set that meets most enterprise requirements without unnecessary overhead.
4. Operational Methodology
The ConnectX-4 Lx EN NIC card operates through dedicated hardware engines that offload network processing tasks from the host CPU, including TCP/UDP/IP stateless processing, checksum computation, packet segmentation, and interrupt management. For virtualized environments, the card implements Single Root I/O Virtualization (SR-IOV) to provide dedicated adapter resources with guaranteed isolation for virtual machines, significantly improving performance compared to software-based virtualization solutions while substantially reducing CPU utilization and improving overall system efficiency.
5. Application Environments
- Enterprise cloud computing and hyperscale data centers
- High-performance computing and AI/ML clusters
- Financial services and low-latency trading systems
- Virtualized infrastructure and software-defined networking
- Storage area networks and enterprise storage solutions
- Media streaming and content delivery networks
- Database and transaction processing systems
- High-frequency data acquisition and processing
6. Technical Specifications
7. Competitive Advantages
- Industry-leading 75 million packets per second message rate
- Sub-microsecond latency for real-time application performance
- Hardware-based isolation ensuring security in multi-tenant environments
- Superior price/performance ratio compared to alternative NIC card solutions
- Future-proof design supporting emerging network protocols
- Reduced total cost of ownership through efficient power utilization
- Enhanced reliability with advanced error correction and diagnostics
8. Service and Support
We provide comprehensive technical support services including pre-sales consultation, system integration assistance, and post-sales troubleshooting. All products include standard warranty coverage with extended protection plans available for enterprise deployments. Our global logistics network ensures timely delivery to customers worldwide, and we offer flexible procurement solutions for large-scale deployments of this advanced network card solution, including volume pricing, customized configuration options, and integration services tailored to specific environment requirements.
9. Frequently Asked Questions
Q: What distinguishes the ConnectX-4 Lx from the ConnectX-6 series
adapters?
A: While the ConnectX-6 series offers higher maximum speeds (up to 200Gb/s) and enhanced
security features, the ConnectX-4 Lx provides excellent performance
for 10-50GbE applications at a more accessible price point, making
it ideal for enterprise deployments where extreme bandwidth isn't
the primary requirement but reliability and feature completeness
are essential.
Q: Is this network card compatible with existing network
infrastructure?
A: Yes, the card is fully backward compatible with lower-speed
Ethernet standards and can interoperate with existing network
switches supporting SFP28 interfaces, providing a smooth upgrade
path for legacy environments without requiring complete
infrastructure overhaul while maintaining investment protection.
Q: What type of cabling is recommended for 25GbE operation?
A: You can use SFP28 DAC (Direct Attach Copper) cables for shorter
distances or optical transceivers with appropriate fiber cables for
longer runs, depending on distance requirements, existing
infrastructure compatibility, and specific performance
characteristics needed for your application environment.
10. Implementation Considerations
- Ensure adequate airflow around the adapter for proper thermal management in dense deployments
- Verify server BIOS settings for PCIe slot configuration (x8 link width recommended for optimal performance)
- Always use manufacturer-recommended drivers and firmware for optimal performance and stability
- Consider switch compatibility and configuration requirements for advanced features like RoCE
- Plan for appropriate cooling solutions in high-density deployments to maintain optimal operating temperatures
- Evaluate cable length requirements and signal integrity considerations for your specific deployment
11. Company Introduction
Our company has more than10 years of experience, hasa large factory,and strong technical team support, accumu-lated aarge number of customers and expe-rience, can provide you with thelowest priceof products and the best quality service.The agency brands include Mellanox, Ruckus, Aruba, Extreme, etc., main products includes original brand new network switch, network card, wireless Access Point , wireless controller, cable etc.We have 10 million inventory for you tochoose, can provide a variety of types ofproducts, large quantities of supply.After ensuring the accurate arrival of yourgoods, provide customer service 24 hours consultation and technical support.With a professional sales and technical team, we have earned ourselves a high reputation among the world market.
ConnectX-4 Lx EN 25GbE Mellanox Network Card Nic Interface MCX4121A-XCAT
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