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Mellanox MCX4121A-ACAT ConnectX 4 Ethernet Adapter Card 25GbE Dual-Port SFP28 PCIe 3×8

The Mellanox MCX4121A-ACAT ConnectX-4 Ethernet Adapter Card is a high-performance network interface card designed for data-intensive applications. It features dual-port 25GbE SFP28 connectivity and a PCIe 3.0 x8 interface, delivering ultra-low latency and high throughput for enterprise and cloud data centers. Key benefits include enhanced scalability, efficient offloading capabilities (such as RDMA over Converged Ethernet and SR-IOV), and support for advanced networking protocols. Its compact design and energy efficiency make it ideal for high-density server environments, offering a future-ready solution for demanding workloads and next-generation networking.

Port:2
Products Status:New / Pulled
Speed:25GbE
Packaging Details:BOX / Bulk
Application:Server

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Product Spotlights

 

CPU Offloads:

RDMA over Converged Ethernet (RoCE)

TCP/UDP/IP stateless offload

LSO, LRO, checksum offload

RSS (can be done on encapsulated packet), TSS, VLAN insertion/ stripping, Receive flow steering

Intelligent interrupt coalescence

 

Hardware-Based I/O Virtualization:

Single Root IOV

Multi-function per port

Address translation and protection

Multiple queues per virtual machine

Enhanced QoS for vNICs

VMware NetQueue support

 

Enhanced Features:

Hardware-based reliable transport

Collective operations offloads

Vector collective operations offloads

Extended Reliable Connected transport (XRC)

Dynamically Connected transport (DCT)

Enhanced Atomic operations

Advanced memory mapping support, allowing user mode registration and remapping of memory (UMR)

On demand paging (ODP)

registratio

RDMA Technology Empowers EDC and HPC

RDMA allows real CPU offloads and kernel bypass, and, as such, RDMA-based applications provide better utilization of network HW resources while increasing speed and lowering link latencies.

The Mellanox MCX4121A-ACAT ConnectX-4 Ethernet Adapter Card offers exceptional performance for high-speed networking. Featuring dual-port 25GbE SFP28 connectivity and a PCIe 3.0 x8 interface, this adapter card is designed for demanding data center and enterprise workloads. With support for advanced offloading capabilities, low-latency performance, and scalable solutions, the MCX4121A-ACAT ensures seamless operation for virtualization, storage, and cloud environments. Perfect for upgrading your network to next-generation speeds and reliability.

Port

2

Products Status

New / Pulled

Speed

25GbE

Packaging Details

BOX / Bulk

Application

Server

Warranty

3 Years / 1 Year

Product Name

Mellanox MCX4121A-ACAT ConnectX 4 Ethernet Adapter Card 25GbE Dual-Port SFP28 PCIe 3×8

Interface

PCIe 3.0 x8

Brand

Mellanox

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⚠️ Inquiries that do not meet these requirements may not receive a response.

⚠️ Wholesale & B2B Inquiries Only! We partner exclusively with established businesses for bulk procurement, no individual, personal, or retail orders.

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