CX4121A Dual 25Gb/s SFP28 Fiber Ports Intelligent RDMA Ethernet Adapter for Virtualization and Storage Servers, Mellanox ConnectX-4 Lx EN MT27711A0 Ethernet Controller, 2X 25GbE PCIE 3.0 x8 NIC Card

CX4121A is a dual 25GbE SFP28 fiber-ports intelligent RDMA Ethernet adapter, designed for seamless networking, clustering and storage applications. Built to the PCI Express Gen 3.0 standard with a PCIE x8 bus interface, it delivers a total bandwidth of 64Gb/s, ensuring both SFP28 fiber ports achieve 25GbE throughput simultaneously. Powered by the high-performance Mellanox ConnectX-4 Lx EN MT27711A0 intelligent converged Ethernet controller, it provides a cost-effective and flexible Ethernet solution for Web 2.0, cloud, data analytics, database and storage platforms.
ATTENTION: The LinksTek CX4121A serves as a drop-in alternative to the MCX4121A-ACAT for server applications.
CX4121A is a dual 25GbE SFP28 fiber-ports intelligent RDMA Ethernet adapter, designed for seamless networking, clustering and storage applications. Built to the PCI Express Gen 3.0 standard with a PCIE x8 bus interface, it delivers a total bandwidth of 64Gb/s, ensuring both SFP28 fiber ports achieve 25GbE throughput simultaneously. Powered by the high-performance Mellanox ConnectX-4 Lx EN MT27711A0 intelligent converged Ethernet controller, it provides a cost-effective and flexible Ethernet solution for Web 2.0, cloud, data analytics, database and storage platforms. It supports I/O virtualization via ConnectX-4 Lx EN SR-IOV technology, offering dedicated adapter resources with guaranteed isolation and protection for virtual machines, helping data center administrators improve server utilization efficiency. It supports overlay networks through advanced hardware offloading engines for NVGRE, VXLAN and GENEVE, allowing data center operators to achieve native performance in modern network architectures. Additionally, it supports RDMA over Converged Ethernet (RoCE), delivering efficient low-latency, high-performance RDMA services over Layer 2 and Layer 3 networks, which greatly enhances the performance of storage applications.
Ethernet Specifications:
Supports IEEE 802.3by, 25 Gb/s; IEEE 802.3ae 10Gb/s; IEEE 802.3az Energy Efficient Ethernet;
IEEE 802.3ap; IEEE 802.3ad; 802.1AX; IEEE 802.1Q. 802.1P VLAN tags and priority; IEEE 802.1Qaz;
IEEE 802.1Qbb; IEEE 802.1Qbg; IEEE 1588V2; Support Jumbo frame (9.6KB).
Compatible System:
Support plug and play on Windows 11, 10 64bit and Windows Server 2012, 2012R2, 2016, 2019, 2022, 2025 64bit.
Compatible with RHEL, CentOS, FreeBSD, VMware and other Linux kernel-based systems.
Package List: 1X CX4121A; 1X Low Profile Bracket
ATTENTION: The LinksTek CX4121A serves as a drop-in alternative to the MCX4121A-ACAT for server applications.
CX4121A 2X 25GbE SFP28 Interface Inteligent RDMA Ethernet Adpater For Data Center & Server For Desktop PC For Personal NAS Technical Specifications: Mellanox ConnectX-4 Lx EN 2x 25Gb/s Ethernet Controller IEEEE 802.3 by 25Gb/s Ethernet Windows 11, 10, Windows Server & Linux SFP28 25GbE Transcievers 25GbE SFP28 DAC Cables SFP28 25GbE AOC Cables PCIE X8 Interface, PCIE X8, X16 Slot Full Height PC & Slim PC Full Height & Low Profile Bracket Product Description: