Mellanox MCX4121A-ACAT ConnectX-4 Lx EN Adapter, 2x SFP28, 10/25GbE
Brand: Mellanox | Category: Transceivers & Cables
SKU: MEL-MCX4121A-ACAT | Part #: MCX4121A-ACAT | MPN: MCX4121A-ACAT
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About the Mellanox MCX4121A-ACAT ConnectX-4 Lx EN Adapter, 2x SFP28, 10/25GbE
The Mellanox MCX4121A-ACAT ConnectX-4 Lx EN Adapter, 2x SFP28, 10/25GbE from Mellanox is enterprise-grade Transceivers & Cables hardware built for data centers. It features 25Gb capacity, HHHL form factor, PCIe 3.0 x8 interface, 10/25GbE speed. The Mellanox MCX4121A-ACAT ConnectX-4 Lx EN Adapter is a dual-port 10/25GbE network interface card designed for server and appliance deployments requiring high-throughput, low-latency Ethernet connectivity. Built on the ConnectX-4 Lx architecture, the adapter provides two SFP28 ports supporting both 10GbE and 25GbE link speeds, connecting to the host system via a PCIe 3.0 x8 interface. The card delivers hardware-offload capabilities including RDMA over Converged Ethernet (RoC Available in brand new condition. Mellanox transceivers & cables products are trusted by enterprises and data centers worldwide. Available from Omnixon Global. Contact our sales team to request a quote.
Technical Specifications
| Brand | Mellanox |
| Category | Transceivers & Cables |
| SKU | MEL-MCX4121A-ACAT |
| Part Number | MCX4121A-ACAT |
| Condition | New |
| Capacity | 25Gb |
| Form Factor | HHHL |
| Interface | PCIe 3.0 x8 |
| Speed | 10/25GbE |
| Manufacturer Part Number | MCX4121A-ACAT |
| Product Series | ConnectX-4 Lx EN |
| Number of Ports | 2 |
| Port Interface | SFP28 |
| Supported Link Speeds | 10GbE, 25GbE |
| Host Interface | PCIe 3.0 x8 |
| Form Factor | Low-profile (half-height) |
| RDMA Support | RoCE v1 and v2 |
| SR-IOV Virtual Functions | Up to 128 VFs per port |
| Offload Engines | TCP/UDP/IP checksum, TSO, LRO, VXLAN, NVGRE tunnel offloads |
| Flow Control | Priority Flow Control (PFC), Enhanced Transmission Selection (ETS) |
| Data Center Bridging | DCB / IEEE 802.1Qbb / IEEE 802.1Qaz |
| Operating System Support | Linux, Windows Server, VMware ESXi |
| Management Interface | PCIe management, NC-SI |
| SFP28 Compatibility | 10GBASE-SR, 25GBASE-SR, Direct Attach Copper (DAC), Active Optical Cable (AOC) |
| Operating Temperature | 0°C to 55°C |
| Power Consumption (typical) | Approximately 7.5 W |
Frequently Asked Questions about Mellanox MCX4121A-ACAT ConnectX-4 Lx EN Adapter, 2x SFP28, 10/25GbE
What does the Mellanox MCX4121A-ACAT ConnectX-4 Lx EN Adapter, 2x SFP28, 10/25GbE do?
The Mellanox MCX4121A-ACAT ConnectX-4 Lx EN Adapter, 2x SFP28, 10/25GbE is enterprise IT hardware deployed in production data centers, server rooms, and edge sites across the GCC and EMEA region.
What are the headline specs of the Mellanox MCX4121A-ACAT ConnectX-4 Lx EN Adapter, 2x SFP28, 10/25GbE?
Key specifications for the Mellanox MCX4121A-ACAT ConnectX-4 Lx EN Adapter, 2x SFP28, 10/25GbE: capacity 25Gb; form factor HHHL; interface PCIe 3.0 x8; new condition; adapter family ConnectX-4 Lx EN Adapter; network ports 2x SFP28; supported speed 10/25GbE; host interface PCIe 3.0 x8; form factor HHHL; use case High-performance server networking, virtualization, storage, AI, and cloud. Manufacturer part number MCX4121A-ACAT. For the full datasheet with electrical, environmental, and compliance details, contact our pre-sales engineering team.