PCIE GEN 3.0 X8 interface to 2X 25Gb/s SFP28 Optical Ports Intelligent RDMA Ethernet Adapter

 1. FebSmart CX4121A is a PCIE GEN 3.0 X8 interface to 2X 25Gb/s SFP28 optical ports intelligent RDMA ethernet adapter for Web 2.0, Cloud, Data Analytics, Storage and Telecom Platforms. Powered by Mellanox ConnectX-4 Lx MT27711A0 2X 25GbE SFP28 Ports Converged Ethernet Controller, bring latest RDMA, SR-IOV, RoCE V2, Network Overlay, Multi-Host, Peer Direct technology into Data Centers.
2. Major Chipset: Mellanox ConnectX-4 Lx MT27711A0 Ethernet Controller; Hardware Interface: PCIE GEN 3.0 X8; Network Speed: 2X 25GbE; Ethernet Interface: 2X 25GbE SFP28 Fabrics Ports; Overlay Networks Type: NVGRE and VXLAN; SR-IOV: 512 Virtual and 16 Physical Functions; Storage Protocols: SRP, iSER, NFS, RDMA, SMB Direct, NVMe-OF; Remote Boot: Ethernet, iSCSI, PXE, UEFI.
3. Support IEEE 802.3cd, 50GbE; IEEE 802.3by, 25GbE, 50GbE; IEEE 802.3ba 40GbE; IEEE 802.3ae 10GbE; Jumbo frame (9.6KB); IEEE 802.3az Fast-Wake Mode; IEEE 802.3ap; IEEE 802.3ad, 802.1AX; IEEE 802.1Q, 802.1P VLAN Tags and Priority; IEEE 802.1Qau, IEEE 802.1Qaz; IEEE 802.1Qbb, IEEE 802.1Qbg, IEEE 1588V2; 25GbE, 50GbE Ethernet Consortium for 50GbE, 100GbE, 200GbE PAM4 Links.
4. Plug and play on Windows Server 2025, 2022, 2019, 2016, 2012 64bit and Windows 11, 10, 8.x 32/64bit systems. Support RHEL, Cent OS, Free BSD, VMware and other Linux kernel-based systems. ATTENTION: The FebSmart CX4121A is an OEM alternative engineered to substitute the Mellanox original model MCX4121A-ACAT in server deployment.
5. Comply with Open Fabrics Enterprise Distribution (OFED) and Open Fabrics Windows Distribution (WinOF-2). Supports Passive or Active 25GbE SFP28 AOC cables, DAC cables and 25GbE SFP28 transceivers with optical cables.
6. Compliant with PCIE GEN 3.0 standards, delivering 8 GT/s per lane. The PCIE X8 interface provides 64 Gbps of bandwidth, ensure 2X SFP28 optical ports archive 25GbE speed concurrently. Works on motherboard PCIE X8 or X16 physical slot. Fully supports PCIE 5.0, 4.0, and 3.0 slots at full 2X 25GbE speeds. 

 Ethernet Features:

    IEEE 802.3by, 25Gb/s, 50 Gb/s. IEEE 802.3ba 40Gb/s. IEEE 802.3ae 10Gb/s.
    25G/50G Ethernet for 50/100/200GE PAM4 links. IEEE 802.3az Energy Efficient.
    IEEE 802.3ap auto-negotiation and KR startup. IEEE 802.1Qbg. IEEE 1588V2.
    IEEE 802.3ad, 802.1AX Link Aggregation. 20/40GBASE-R2, 50GBASE-R4 Ethernet.
    Jumbo frame support (9.6KB). IEEE 802.1Q, 802.1P VLAN. IEEE 802.1Qaz. IEEE 802.1Qbb.

A. Powered by Mellanox ConnectX-4 Lx MT27711A0 2X 25GbE SFP28 Ports Converged Ethernet Controller. Bring latest RDMA, SR-IOV, RoCE V2, Network Overlay, Multi-Host, Peer Direct technology into Data Centers.

B. PCIE GEN 3.0 standard, PCIE X8 interface, provide 64Gb/s bandwidth ensure 2X SFP28 ethernet ports archive 25GbE concurrently. Works on Motherboard PCIE X8 or X16 slot. Supports PCIE 5.0, 4.0 and 3.0 slot in full speed 2X 25GbE.

C. IEEE 802.3by, 25Gb/s, 50 Gb/s. IEEE 802.3ba 40Gb/s. IEEE 802.3ae 10Gb/s. 25G/50G Ethernet for 50/100/200GE PAM4 Links Switches

D. Comply with Open Fabrics Enterprise Distribution (OFED) and Open Fabrics Windows Distribution (WinOF-2). Supports Passive or active 25GbE SFP28 AOC, DAC cables, and 25GbE SFP28 transceivers with optical cables.

E. Plug and play on Windows Server 2025, 2022, 2019, 2016, 2012 64bit and Windows 11, 10, 8.x 32/64bit systems.
Support RHEL, Cent OS, Free BSD, VMware and other Linux kernel-basedsystems.

F. Full Height Bracket Mounted on the PCIE NIC Card, Will Works on Standard Size PC. Low Profile Bracket Packed in the Box, Will Works on Slim PC.

FebSmart CX4121A is a PCIE GEN 3.0 X8 interface to 2X 25Gb/s SFP28 optical ports intelligent RDMA ethernet adapter, designed for Web 2.0, Cloud, Data Analytics, Storage and Telecom platforms. PCIE GEN 3.0 standard, support 8GT/s per LANE. PCIE X8 bus interface, provide 64Gb/s bandwidth ensure 2X SFP28 optical ports archive 25GbE concurrently. Powered by Mellanox ConnectX-4 Lx MT27711A0 2X 25GbE SFP28 Ports Converged Ethernet Controller, bring latest RDMA, SR-IOV, RoCE V2, Network Overlay, Multi-Host, Peer Direct technology into Data Centers. Hardware-based RDMA engine, bypassing CPU and kernel, enabling direct memory access with sub‑microsecond latency and up to 25Gbps bandwidth under lossless RDMA over Converged Ethernet (RoCE V2) Protocols. SR-IOV technology provides dedicated adapter resources and guaranteed isolation and protection for virtual machines within the server. Supports up to 512 virtual and 16 physical functions. Overlay Networks Technology, by providing advanced NVGRE, VXLAN and GENEVE hardware offloading, by passing TCP packet from the hardware offloading engines, to decrease CPU burden. Peer Direct communication provides high efficiency RDMA access by eliminating unnecessary internal data copies between components on the PCIE bus, therefore significantly reduces application run time. Multi-Host technology, allows multiple hosts to be connected into a single adapter by separating the PCIE lane into multiple and independent interfaces. Comply with Open Fabrics Enterprise Distribution (OFED) and Open Fabrics Windows Distribution (WinOF-2). Supports Passive or active 25GbE SFP28 AOC, DAC cables, and 25GbE SFP28 transceivers with optical cables.

Ethernet Features:

IEEE 802.3by, 25Gb/s, 50 Gb/s. IEEE 802.3ba 40Gb/s. IEEE 802.3ae 10Gb/s.

25G/50G Ethernet for 50/100/200GE PAM4 links. IEEE 802.3az Energy Efficient.

IEEE 802.3ap auto-negotiation and KR startup. IEEE 802.1Qbg. IEEE 1588V2.

IEEE 802.3ad, 802.1AX Link Aggregation. 20/40GBASE-R2, 50GBASE-R4 Ethernet.

Jumbo frame support (9.6KB). IEEE 802.1Q, 802.1P VLAN. IEEE 802.1Qaz. IEEE 802.1Qbb.

Compatible Systems:

Plug and play on Windows Server 2025, 2022, 2019, 2016, 2012 64bit and Windows 11, 10, 8.x 32/64bit systems.

Support RHEL, Cent OS, Free BSD, VMware and other Linux kernel systems.

Package: 1X CX4121A 1X Low Profile Bracket.

ATTENTION: The FebSmart CX4121A is an OEM alternative engineered to substitute the Mellanox original model MCX4121A-ACAT in server deployment.