3Com 3CR17571-91 4500 PWR Managed L3 Switch 24 PoE Ethernet Ports

3COM - 4500-24-POE ETHERNET SWITCH - MANAGEABLE - STACK PORT - POE PORTS (3CR17571-91). SPECIFICATIONS : DEVICE TYPE SWITCH : STACKABLE FORM FACTOR EXTERNAL : 1 U LOCALIZATION : UNITED STATES PORTS QTY : 24 X ETHERNET 10BASE-T, ETHERNET 100BASE-TX DATA TRANSFER RATE : 100 MBPS DATA LINK PROTOCOL : ETHERNET, FAST ETHERNET AUXILIARY NETWORK PORTS 2X1000BASE-T/SFP (MINI-GBIC)(UPLINK) REMOTE MANAGEMENT PROTOCOL : SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, TELNET, SNMP 3, HTTP COMMUNICATION MODE HALF-DUPLEX, FULL-DUPLEX FEATURES FLOW CONTROL, LAYER 3 SWITCHING, LAYER 2 SWITCHING, AUTO-SENSING PER DEVICE, POWER OVER ETHERNET (POE), AUTO-NEGOTIATION, IGMP SNOOPING, TRAFFIC SHAPING, PACKET FILTERING, PORT MIRRORING POWER : POWER OVER ETHERNET (POE) : YES POWER DEVICE : POWER SUPPLY - INTERNAL VOLTAGE REQUIRED : AC 120/230 V ( 50/60 HZ )