Cisco WS-C2960XR-48TD-I Rack-mountable - 1U, Interfaces 2 x 10G SFP+, 48 x 10/100/1000 Ethernet Gigabit ports, Forwarding Bandwidth 108Gbps, Stack bandwidth 80G, RAM 512 MB, Flash Memory 128 MB. Cisco Catalyst 2960-X Series Switches are the next generation of the world’s most widely deployed access switches. They enable intelligent services such as application visibility, Smart Operations, Layer 3 routing and deliver best-in-class energy efficiency with up to 80 percent energy savings.