Cisco WS-C2948G | Catalyst 2948G 48 x RJ-45 Ports 10/100Base-TX + 2 x Uplink GBIC Slots Layer 3 Managed Rack-mountable Fast Ethernet Network Switch

1. Switching capacity: 17.6 Gbps
2. Forwarding rate: 13.1 Mpps
3. MAC address table size: 8,000 entries
4. VLAN support: Yes, up to 4,096 VLANs
5. QoS support: Yes, with 4 egress queues per port
6. Spanning Tree Protocol support: Yes, including Rapid Spanning Tree Protocol (RSTP) and Multiple Spanning Tree Protocol (MSTP)
7. Link Aggregation Control Protocol (LACP) support: Yes, with up to 8 groups and up to 8 ports per group
8. Power over Ethernet (PoE) support: No
9. Management interface: Command Line Interface (CLI), Simple Network Management Protocol (SNMP), and web-based GUI
10. Security features: Access Control Lists (ACLs), port security, and 802.1X authentication
11. Rack mountable: Yes, with included rack mount kit
12. Dimensions: 1.73 x 17.5 x 16.3 inches

Helpful notes:
1. The WS-C2948G is a reliable and cost-effective option for small to medium-sized businesses.
2. The switch is compatible with a wide range of Cisco networking equipment, making it easy to integrate into existing networks.
3. The CLI interface can be intimidating for beginners, but the web-based GUI provides a more user-friendly alternative.