Lenovo 00AG540 CN4052S 2-Port 10Gb Adapter | PCIe 3.0 x8, Enterprise

Move storage and network traffic with less overhead and more consistency. The Lenovo CN4052S is a 2-port 10 Gb virtual fabric adapter built for server environments that depend on predictable throughput, efficient CPU use, and support for modern RDMA workloads. Its Emulex XE100-P2 "Skyhawk P2" ASIC gives it the performance foundation needed for demanding virtualization and storage networking tasks. This adapter is a strong fit for teams standardizing on virtual fabric architectures, especially where RoCE v2 support matters. Dual 10 Gb ports provide the bandwidth needed for converged traffic patterns, while the PCI Express 3.0 x8 host interface aligns with enterprise server expansion slots. In practice, that means cleaner integration into Lenovo infrastructure and a better match for workloads that cannot afford bottlenecks at the adapter layer. For buyers comparing commodity NICs to purpose-built fabric adapters, the difference is control. The CN4052S is designed for environments where storage traffic, virtualization, and network efficiency must stay aligned. That makes it a practical premium choice for data centers that value performance consistency over lowest-cost hardware.