Extreme Networks Gigabit Ethernet Stackable Edge Switch - 48 Ports - Manageable - Stack Port - 4 x Expansion Slots - 10/100/1000Base-T, 1000Base-X, 10GBase-X - Shared SFP Slot - 2 x SFP Slots - 3 Layer Supported - DesktopLifetime Limited Warranty B5K125-4

The B-Series is a cost-effective, feature-rich, stackable switch family that provides a broad set of features today and will continue to deliver benefits well into the future. The B-Series is a scalable, high-performance Gigabit Ethernet switch that provides support for the bandwidth-intensive and latency-sensitive requirements of today's demanding business applications. The B5 is an excellent choice for environments that require complete multilayer switching capabilities and support for high-density 10/100/1000 Ethernet ports, cost-effective 10GE uplinks, dual IPv4/IPv6 management, basic routing and policy-based automation capabilities for advanced edge deployments.