Mellanox MCX4131A-GCAT ConnectX-4 NIC 40GbE 1-Port QSFP Used

NVIDIA Mellanox ConnectX-4 Lx MCX4131A-GCAT 40GbE Single-Port Network Adapter

The NVIDIA ConnectX-4 Lx EN MCX4131A-GCAT is a cost-effective 40GbE single-port QSFP28 network adapter built on a PCIe 3.0 x8 interface. It supports 1/10/25/40 Gb/s Ethernet speeds, making it an ideal, power-efficient upgrade for existing enterprise server and storage infrastructure without replacing the entire network stack.

Key Features

• Port: 1 x QSFP28 (40GbE)
• Interface: PCIe 3.0 x8
• Speed: 1/10/25/40 Gb/s Ethernet
• Series: ConnectX-4 Lx (entry-level, low power)
• RDMA over Converged Ethernet (RoCE) for low-latency workloads
• SR-IOV support for virtualization and cloud environments

Compatibility

Works with Linux (RHEL, Ubuntu, Debian, CentOS), VMware ESXi and Windows Server using NVIDIA MLNX_OFED drivers.

Condition & Warranty

Condition: Used — bench-tested in-house, verified working before shipping. Quality-tested with warranty; all units are cleaned and re-tested.

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