28-Port Gigabit Poe Stackable Smart Switch. The Dgs-1520 Series, A New Generation Of Layer 3 Stackable Smart Managed Switches, Includes Four 10 Gb Ports For Uplink Or Stacking Up To Eight Switches With A Total Of 80 Gbps Stacking Bandwidth. Designed For Effortless Multi-Site Network Deployments With Zero Touch Provisioning, The Dgs-1520 Series Is Also Powerful Enough For Server And Storage Applications. For Unrestricted Wi-Fi 6 Edge Device Capabilities, Poe Models Offer Four 2.5 Gb Base-T Ports For Multi-Gigabit Connectivity. For Smbs With Expanding Networks And Significant Bandwidth Growth, The Dgs-1520 Effortlessly Adds Highly Cost-Effective 10 Gb Connectivity To Help Ensure Seamless Aggregation Between Access And Core Layers.