Detail overview
   Hpe - 3500-24 Switch - Switch - Managed - 20 X 10/100 + 4 X Combo Gigabit Sfp (j9470-69001).  
 Key Features : 
  Device Type : Switch - 20 Ports - Managed 
   Enclosure Type : Rack-mountable - 1u 
   Processor : 1 X Freescale Powerpc 8540 : 666 Mhz 
   Ram : 256 Mb Ddr Sdram 
   Flash Memory : 4 Mb 
 Networking : 
   Ports Qty : 20 X 10/100 + 4 X Combo Gigabit Sfp 
   Data Transfer Rate : 100 Mbps 
   Data Link Protocol : Ethernet, Fast Ethernet 
   Routing Protocol : Rip-1, Rip-2, Ospfv2, Igmpv3 
remote Management Protocol : Snmp 1, Rmon 1, Rmon 2, Rmon 3, Rmon 9, Telnet, Snmp 3, Snmp 2c, Http 
   Connectivity Technology : Wired 
   Communication Mode : Half-duplex, Full-duplex 
   Features : Flow Control, Ip-routing, Bootp Support, Arp Support, Vlan Support, Auto-uplink (auto Mdi/mdi-x), Manageable, Access Control List (acl) 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 802.3af, Ieee 802.3x, Ieee 802.3ad (lacp), Ieee 802.1w, Ieee 802.1x, Ieee 802.1s, Ieee 802.1ab (lldp) 
 Expansion / Connectivity : 
   Interfaces : 1 X Serial (rs-232) - Db-9 - Management 20 X 100base-tx - Rj-45 4 X 1000base-t - Rj-45 4 X Sfp (mini-gbic) 
 Power : 
   Power Over Ethernet (poe) : Yes 
   Power Device : Power Supply 
   Voltage Required : Ac 120/230 V ( 50/60 Hz )