HP JC772-61101 | FlexFabric 5900 Series 5900AF-48XG-4QSFP+ 48 x RJ-45 Ports 10GBase-T + 4 x QSFP+ Ports Layer 3 Managed Rack-mountable Gigabit Ethernet Network Switch

Here are 12 technical specifications for the HP ProCurve 5900AF-48XG-4QSFP switch:

1. Switching capacity: 1.28 Tbps
2. Forwarding rate: 952 Mpps
3. Number of ports: 48 10/100/1000Base-T ports and 4 QSFP+ 40GbE ports
4. Jumbo frame support: Up to 9216 bytes
5. VLAN support: 4096 VLAN IDs
6. Layer 3 routing protocols: OSPF, BGP, PIM-DM, PIM-SM, PIM-SSM, MSDP, VRRP, RIP, RIPng, IPv6, IS-IS
7. Layer 2 switching protocols: STP, RSTP, MSTP, PVST+, LLDP, LLDP-MED, LACP, PAgP
8. Security features: ACLs, port security, DHCP snooping, IP source guard, Dynamic ARP protection, RADIUS, TACACS+, MAC address lockout
9. Quality of Service (QoS) features: 8 hardware queues per port, DiffServ, traffic shaping, rate limiting, priority queuing
10. Management interfaces: CLI, SNMP, web GUI, Telnet, SSH, RMON, sFlow
11. Power consumption: 360W maximum
12. Dimensions: 17.42 x 18.03 x 1.72 inches (WxDxH)

Helpful notes:
1. The switch supports hot-swappable power supplies and fan trays for easy maintenance.
2. The QSFP+ ports can be used for either 40GbE or 4x10GbE connections.
3. The switch has a modular design, allowing for easy expansion with additional modules.