CISCO SYSTEMS 50-Port PoE Smart Switch (SG22050PK9NA) Cisco 220 Series Switches can quickly and reliably connect employees working in small offices with each other and with all of the servers, printers, and other devices they use. The Cisco 220 Series Switches provide QoS features to automatically prioritize delay-sensitive traffic to help you easily deploy an IP-based communication solution on a converged network. Cisco 220 Series Switches are easy to deploy and use, not only for small, self-installed deployment by non-IT professionals, but also for mid-scale deployment by IT engineers. A higher level of security and intelligence. ACLs and flow-based QoS give you more control over network performance, maintain the integrity of key business information, and can enable higher network efficiency.