Lenovo CN4058S 10Gb 8-Port Mezzanine Adapter | 10GbE, Enterprise

Increase server network density with the Lenovo CN4058S 10Gb 8-Port Mezzanine Adapter, MPN 94Y5163. Designed for supported Lenovo platforms, this mezzanine card delivers eight 10GbE ports in a compact internal form factor, helping infrastructure teams scale bandwidth without consuming standard PCIe expansion space. That matters when rack density, airflow, and slot availability are already under pressure. For virtualized hosts, clustered storage nodes, and application servers that move large volumes of east-west traffic, the CN4058S provides the port count needed to segment traffic and keep throughput available where it counts. The mezzanine design keeps the adapter inside the server chassis, reducing external cabling and preserving a cleaner deployment profile than add-in cards and breakout-heavy alternatives. Choose this adapter when you need more than basic connectivity. Eight 10GbE ports give architects room to separate management, VM, storage, and backup traffic across a single server footprint. For procurement teams, it is a practical way to extend network capacity on Lenovo hardware while maintaining a consistent platform strategy.