CISCO - CATALYST 4948 MANAGED L3 SWITCH - 48 ETHERNET PORTS & 4 SFP PORTS (WS-C4948-E). SPECIFICATIONS : - PRODUCT DESCRIPTION : CISCO CATALYST 4948 - SWITCH - 48 PORTS - DEVICE TYPE : SWITCH - FORM FACTOR : RACK-MOUNTABLE - 1U - DIMENSIONS : (WXDXH) 17.3 IN X 16.1 IN X 1.7 IN - PROCESSOR 1 266 MHZ - RAM : 256 MB SDRAM - FLASH MEMORY : 64 MB - PORTS QTY : 48 X ETHERNET 10BASE-T, ETHERNET - 100BASE-TX, ETHERNET 1000BASE-T - DATA TRANSFER RATE : 1 GBPS - DATA LINK PROTOCOL : ETHERNET, FAST ETHERNET, GIGABIT ETHERNET - EMPTY SLOTS : 4 X SFP (MINI-GBIC) - REMOTE MANAGEMENT PROTOCOL : SNMP 1, SNMP 2, RMON 1, RMON 2, RMON 3, RMON 9, TELNET, SNMP 3, HTTP - FEATURES : LAYER 4 SWITCHING, LAYER 3 SWITCHING, LAYER 2 SWITCHING, IP-ROUTING, DHCP SUPPORT, AUTO-NEGOTIATION, ARP SUPPORT, TRUNKING, CISCO FAST ETHERCHANNEL, VLAN SUPPORT, CISCO GIGABIT ETHERCHANNEL , IGMP SNOOPING, SYSLOG SUPPORT, MANAGEABLE, MAC ADDRESS FILTERING - POWER : AC 120/230 V CONDITION : REFURBISHED. AVAILABILITY : IN STOCK. OUR WARRANTY : 30 DAYS.