Catalyst 3750X 48 Port Data LAN Base 1,Original Brand New & ... , DHCP support, power over Ethernet (PoE), auto-negotiation, ARP support, trunking, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, Syslog support ... relation and cooperation! Best Sell Cisco WS-C3750X-48T-L Catalyst 3750X 48 Port Data LAN Base