Cisco WS-C2960XR-48TS-I, Network Ports-48, Port 48 x Gigabit Ethernet Network, 4 x Gigabit Ethernet Expansion Slot, Twisted Pair, Network 10/100/1000Base-T, Expansion Slots-4, Standard Memory 512 MB, DRAM, Flash Memory 128 MB. All Catalyst 2960-X Series Switches use a single Universal Cisco IOS Software Image for all SKUs. Depending on the switch model, the Cisco IOS image automatically configures either the LAN Lite, LAN Base, or IP Lite feature set.