Layer 3 Managed Gigabit Stack Switches DGS-3630 Series. Designed for small to medium-sized businesses and Internet service providers. High performance, flexibility, fault tolerance, and advanced software features. Gigabit Ethernet SFP, 10 GbE SFP+, security features, and enhanced Quality of Service (QoS). The devices in the DGS-3630 series can be used as core, distribution, or access layer switches. With high port density, switch stacking, and intuitive management, the DGS-3630 is suitable for a variety of applications. The stacking technology allows multiple switches to be combined into a single physical or virtual stack. Easily scale your network using stack cables. No stack modules are required. This provides higher redundancy with multiple physical units, simplifies management, and allows all components of the stack to be managed via a single IP address.