REFURBISHED WITH A 90 DAY CCS WARRANTY!!! An ideal companion to the rapidly emerging class of 10-gigabit servers, the NETGEAR ProSafe 52-port Gigabit Stackable Smart Switch is the industrys first smart switch with 10-gigabit connectivity delivering maximum throughput in SMB networks for demanding tasks such as data replication and backup, virtualization, video on demand and high-volume transaction processing. At less than half the cost of a managed switch, the ProSafe 52-Port Gigabit Smart Switch provides 48 gigabit ports for connecting devices to the network, along with four 10GE SFP+ ports for stacking or uplink to servers. As many as six switches can be stacked for a total of 288 network ports, with full redundancy for unsurpassed reliability. The GS752TXS offers a rich enterprise-class feature set, including advanced traffic management and security, yet can be easily configured and monitored through a web-based graphical user interface. Auto Negotiation of speed and duplex modes IEEE 802.3x Flow Control DHCP Client Dynamic MAC address management Static MAC IEEE 802.1Q-based VLAN Auto Voice VLAN IEEE 802.1x (Guest VLAN RADIUS-based VLAN assignment via .1x) IEEE 802.1x port authentication RADIUS accounting IP-based L4-based Access Control List (ACL) IGMP snooping v1 v2 and v3 IGMP Snooping querier Blocking of unknown multicast traffic 1024 maximum multicast group MLD snooping Port mirroring both on ingress and egress traffic Jumbo frame support Broadcast Storm control Cable diagnostics Loop Detection DoS Prevention Option to enable/disable the flooding of EAPOL when 802.1x is disabled Protected ports Smart Control Center Software for multi-switch management IP Access List IPv6 Management Configurable Management VLAN SNMP v1/v2c and v3 Standard MIBs (RFC1213 RFC1643 and RFC1493) RMON group 1 2 3 9 P-BRIDGE-MIB and Q-BRIDGE-MIB Firmware Upgrade through Smart Control Center (TFTP) Firmware download (to switch) and upload (to server) through TFTP/HTTP Configuration and Image Upload (to PC) through HTTP