Detail overview
   Hp - 3500-48g-poe+ Yl Switch Switch - 48 Ports - Managed (j9311-61001). 
 Key Features : 
  Device Type : Switch - 48 Ports - Managed 
   Enclosure Type : Rack-mountable - 1u 
   Ports : 48 X 10/100/1000 + 4 X Shared Sfp 
   Power Over Ethernet (poe) : Yes 
   Routing Protocol : Rip-1, Rip-2, Static Ip Routing, Igmpv3 
   Remote Management Protocol : Snmp 1, Rmon 1, Rmon 2, Rmon 3, Rmon 9, Telnet, Snmp 3, Snmp 2c, Http, Https, Ssh 
   Encryption Algorithm : Ssl 
   Authentication Method : Secure Shell (ssh), Radius, Tacacs+, Secure Shell V.2 (ssh2) 
   Features : Flow Control, Auto-sensing Per Device, Dhcp Support, Power Over Ethernet (poe), Auto-negotiation, Bootp Support, Arp Support, Vlan Support, Auto-uplink (auto Mdi/mdi-x), Diffserv Support, Manageable, Sntp Support, Quality Of Service (qos) 
   Compliant Standards : Ieee 802.3, Ieee 802.3u, Ieee 802.1d, Ieee 802.1q, Ieee 802.3ab, Ieee 802.1p, Ieee 802.3af, Ieee 802.3x, Ieee 802.3ad (lacp), Ieee 802.1w, Ieee 802.1x, Ieee 802.1s, Ieee 802.1ab (lldp) 
   Processor : 1 X Freescale Powerpc 8540 : 666 Mhz 
   Ram : 256 Mb - Ddr Sdram 
   Flash Memory : 4 Mb Flash 
   Status Indicators : Port Status, Power 
 Expansion / Connectivity : 
   Interfaces : 1 X Rs-232c - 9 Pin D-sub (db-9) - Management 48 X 10base-t/100base-tx/1000base-t - Rj-45 - Poe 4 X Sfp (mini-gbic) 
expansion Slots Total (free) 1 ( 1 ) X Expansion Slot 
 Power : 
power Over Ethernet (poe) : Yes 
power Device : Power Supply 
voltage Required : Ac 120/230 V ( 50/60 Hz ) 
power Consumption Operational : 638 Watt