Dell Mellanox CX-4 LX Dual Port 10/25GbE Mezzanine Adapter | WCHFY

The Dell Mellanox ConnectX-4 Lx Mezzanine Adapter (Part Number: WCHFY) delivers high-speed Ethernet connectivity for Dell PowerEdge blade servers. With dual 10/25GbE ports, it leverages a KR (backplane) interface, which routes connectivity through the chassis midplane — eliminating the need for external cabling. This design ensures clean integration, reduced latency, and high throughput for bandwidth-intensive workloads such as virtualization, cloud computing, and software-defined storage.

Built on the Mellanox ConnectX-4 Lx architecture, the WCHFY supports advanced features like RDMA over Converged Ethernet (RoCE), VXLAN, and NVGRE offloading, allowing more efficient use of server CPU and network bandwidth. The adapter is optimized for environments where performance, scalability, and low latency are critical — making it ideal for modern enterprise and HPC deployments.