Support demanding enterprise traffic patterns with the Cisco C890 M5 SIOM Card MFG AOC-M25G-M4S-O. Built for Cisco C890 M5 platforms, this adapter is designed to deliver compact, high-density Ethernet connectivity where server integration and port efficiency are both important. The 4-port layout gives infrastructure teams flexibility for segmented traffic, uplink design, and workload separation at the server edge. In environments where 25 GbE is the right balance of bandwidth and cost, this card helps preserve rack efficiency while providing the throughput needed for virtualization, application hosting, and storage-connected workloads. Because it is a Cisco platform-specific SIOM card, it fits naturally into standardized deployments where consistency matters as much as raw speed. That makes it a practical choice for teams building repeatable server configurations across enterprise fleets. When you need a network adapter that aligns with the platform and supports dense connectivity without excess complexity, this card delivers the right profile for the job.