Cisco Catalyst 2950 Series 48-port managed switch with 48 x 10/100BASE-TX ports and 2 x 10/100/1000BASE-T uplink ports. The WS-C2950T-48-SI-24X7X2 designation appears to bundle the switch with a 24x7x2 hardware maintenance service contract.
48 x 10/100BASE-TX Ethernet ports
2 x 10/100/1000BASE-T uplink ports
Layer 2 managed switch
Standard Image software
Power consumption: 45W maximum
Operating temperature: 0–45°C
Dimensions: 1.8 x 17.5 x 14.5 inches (1U rack-mountable)
MAC address table: 12,000 entries
Full-duplex communication support
Cluster capable and stackable