HP J9311-61201 | ProCurve 3500 Series 3500-48G-PoE+ 44 x RJ-45 Ports PoE+ 10/100/1000Base-T + 4 x Dual-Personality Ports + 1 x Open Module Slot Layer 2 Managed Rack-Mountable Gigabit Ethernet Network Switch

Here are the technical specifications for the HP 48-Port x 10/100/1000 (PoE) + 4 x Shared SFP Gigabit Ethernet Rack-Mountable Switch:

1. Switching capacity: 104 Gbps
2. Forwarding rate: 77.4 Mpps
3. PoE power budget: 370W
4. VLAN support: Yes
5. Quality of Service (QoS) support: Yes
6. Jumbo frames: 9216 bytes
7. MAC address table size: 16K entries
8. Management interface: Web, CLI, SNMP
9. Port mirroring: Yes
10. Link aggregation: Yes
11. Spanning tree protocol: Yes
12. Dimensions (WxDxH): 44.25 cm x 32.26 cm x 4.39 cm

Helpful notes:
1. This switch is ideal for small to medium-sized businesses that require advanced features such as PoE, VLANs, and QoS.
2. The four shared SFP ports provide flexibility for connecting to fiber networks.
3. The web-based management interface is user-friendly and allows for easy configuration and monitoring of the switch.