Detail overview
   Hp J9147-61001 48-port Procurve 2910-48g Al Switch, Managed, Stackable. 
 Key Features : 
  Device Type : Switch - Managed - Stackable 
   Enclosure Type : External - 1u 
 Processor : 
   Processor : 2 X Arm Arm1156t2-s : 515 Mhz 
 Memory : 
   Ram : 512 Mb Sdram 
   Flash Memory : 4 Mb Flash 
 Networking : 
   Ports Qty : 48x Ethernet 10base-t, Ethernet 100base-tx, Ethernet 1000base-t 
   Max Units In A Stack : 16 
   Data Transfer Rate : 1 Gbps 
   Data Link Protocol : Ethernet, Fast Ethernet, Gigabit Ethernet 
   Routing Protocol : Rip-1, Rip-2, Static Ip Routing 
   Remote Management Protocol : Snmp 1, Rmon 1, Rmon 2, Rmon 3, Rmon 9, Telnet, Snmp 3, Snmp 2c, Http 
   Connectivity Technology : Wired 
   Switching Protocol : Ethernet 
   Status Indicators : Link Activity, Port Transmission Speed 
   Features : Flow Control, Dhcp Support, Bootp Support, Arp Support, Vlan Support, Auto-uplink (auto Mdi/mdi-x), Port Mirroring, Manageable, Ipv6 Support, Quality Of Service (qos), Jumbo Frames Support 
   Compliant Standards : Ieee 802.3, Ieee 802.3u, Ieee 802.1d, Ieee 802.1q, Ieee 802.3ab, Ieee 802.1p, Ieee 802.3x, Ieee 802.3ad (lacp), Ieee 802.1w, Ieee 802.1x, Ieee 802.1s 
 Power : 
   Power Device : Power Supply - Internal 
   Voltage Required : Ac 120/230 V ( 50/60 Hz ) 
   Power Consumption Operational : 105 Watt 
 Expansion / Connectivity : 
   Expansion Slots Total (free) : 4 ( 4 ) X Sfp (mini-gbic) 
   Interfaces : 48 X Network - Ethernet 10base-t/100base-tx/1000base-t - Rj-45 1 X Management - Console - Rj-45