Hong Kong Starsurge Group Co., Limited

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MCX4121A-XCAT ConnectX-4 Lx EN Mellanox Network Card 10GbE Dual Port SFP28 PCIe3.0 X8

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MCX4121A-XCAT ConnectX-4 Lx EN Mellanox Network Card 10GbE Dual Port SFP28 PCIe3.0 X8

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Brand Name :Mellanox
Model Number :MCX4121A-XCAT
MOQ :1 pcs
Price :Negotiable
Payment Terms :T/T,XTransfer,Western Union,MoneyGram
Packaging Details :carton
products Status :Stock
Application :Server
keyword :connectx 4 lx en mcx4121a xcat mellanox network card
Type :wired
Max Speed :25Gb/s
name :MCX4121A-XCAT ConnectX-4 Lx EN Mellanox Network Card 10GbE Dual Port SFP28 PCIe3.0 X8
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Product Overview

The Mellanox ConnectX-4 Lx EN Network Card (MCX653105A-EFAT) is a high-performance, dual-port Ethernet adapter designed to meet the demanding requirements of modern data centers. Supporting speeds of 10, 25, 40, and 50 Gb/s, this network card delivers exceptional bandwidth, ultra-low latency, and advanced hardware offloads for virtualization, storage, and cloud applications. It is an ideal solution for enterprises seeking to enhance server efficiency, reduce operational costs, and support scalable network infrastructure.

Key Features

  • Dual-port SFP28 connectivity supporting 10/25/40/50GbE speeds
  • Hardware-based RoCE (RDMA over Converged Ethernet) for low-latency data transfer
  • SR-IOV virtualization with support for up to 256 virtual functions
  • Hardware offload for NVGRE, VXLAN, and GENEVE overlay networks
  • Mellanox Multi-Host technology supporting up to 4 independent servers
  • Energy-efficient design compliant with IEEE 802.3az
  • Full compatibility with PCIe 3.0 x8 host interfaces

Core Technologies

The ConnectX-4 Lx network card incorporates cutting-edge technologies including RoCE v2 for efficient remote direct memory access, end-to-end QoS and congestion control, overlay network encapsulation/decapsulation, and GPU Direct support for accelerated data movement between GPUs and network devices. It also supports advanced storage protocols like iSER and NFS over RDMA.

How It Works

The NIC card offloads network processing tasks from the CPU through stateless offload engines, RoCE, and overlay network processing. It uses hardware-based encapsulation/decapsulation for tunneling protocols, allowing efficient traffic handling without CPU overhead. Multi-Host technology splits the PCIe interface into multiple independent interfaces, enabling direct connection for up to four hosts to a single network card.

Applications

This network interface card is widely used in:

  • Cloud data centers and hyper-converged infrastructure (HCI)
  • High-performance computing (HPC) and AI clusters
  • Virtualized environments and software-defined storage (SDS)
  • Big data analytics and machine learning platforms
  • Enterprise database and storage area networks (SAN)

Specifications

Attribute Value
Model MCX653105A-EFAT
Interface Dual-port SFP28
Speeds 10/25/40/50 Gb/s
Host Interface PCIe 3.0 x8
RDMA Support RoCE v1/v2
Virtualization SR-IOV, 256 VFs
Form Factor Low-profile PCIe
Power Consumption < 10W

Advantages

Compared to previous generations and competing products, the ConnectX-4 Lx EN network card offers:

  • Superior throughput and lower latency for latency-sensitive applications
  • Hardware-level isolation for enhanced security in multi-tenant environments
  • Reduced TCO through I/O consolidation and energy efficiency
  • Broad compatibility with x86, Power, ARM, and GPU-based systems
  • Future-proof support for emerging overlay protocols and storage standards

Service & Support

We provide:

  • 1-year hardware warranty
  • 24/7 technical support and consultation
  • Fast delivery with global shipping options
  • Custom configuration and integration services
  • Comprehensive driver and firmware support for Windows, Linux, VMware

Frequently Asked Questions

Q: What is the maximum throughput of this network card?

A: The dual-port NIC card supports up to 50 Gb/s per port, with a total bandwidth of 100 Gb/s.

Q: Does it support VMware ESXi?

A: Yes, the ConnectX-4 Lx EN is fully compatible with VMware ESXi and supports NetQueue and SR-IOV.

Q: Can I use this NIC with existing 10GbE switches?

A: Absolutely. The network interface card is backward compatible with 10GbE and 1GbE switches using appropriate transceivers.

Q: Is RoCE compatible with standard Ethernet networks?

A: Yes, RoCE operates over standard Ethernet networks with DCB and PFC support for lossless operation.

Precautions

  • Ensure proper cooling and airflow in the server chassis.
  • Use qualified optical or DAC cables for reliable connectivity.
  • Verify compatibility with your motherboard’s PCIe slot and BIOS settings.
  • Update to the latest firmware and drivers for optimal performance.
  • Follow ESD safety procedures during installation.

Company Introduction

MCX4121A-XCAT ConnectX-4 Lx EN Mellanox Network Card 10GbE Dual Port SFP28 PCIe3.0 X8

With over 10 years of industry experience, we operate a large factory supported by a strong technical team. We have served a wide range of customers and offer competitive pricing on top-tier networking products. Our portfolio includes brands like Mellanox, Ruckus, Aruba, and Extreme. We carry extensive inventory including network switches, NIC cards, wireless access points, controllers, and cables. Our professional sales and technical support teams are available 24/7 to ensure customer satisfaction.

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