based security combined with local authentication Rapid Spanning Tree Protocol (RSTP) support improvesnetwork compatibility, scalability and availability IGMP snooping and query and multicast filtering optimizesnetwork performance Easy-to-use browser based tools allow remote detection ofcable issuesProduct Specifications Ports: total of 50 ports, with 48 autosensing 10/100 ports and 2dual-personality Gigabit port pairs, configurable as 10/100/1000 orSFP Layer 2 switching: full-rate nonblocking on all ports, full-/half-duplex autonegotiation, flow control, IEEE 802.1Q VLAN support,IEEE 802.1p traffic prioritization, IGMP snooping; more Convergence: 4 hardware queues per port; IEEE 802.1p Class ofService/Quality of Service (CoS/QoS); auto-VLAN assignment forvoice traffic; more Security: IEEE 802.1X Switch management: Web-based configuration, SNMPmanagement, compact CLI for initial switch configuration Dimensions:height 4.4 cm (1.7 in or 1 RU); width 44.0 cm (17.3 in); depth 17.5cm (6.9 in) Weight: 1.7 Kg (3.7 lb)Package Contents switch unit power cord self-adhesive rubber pads rack-mount kit user guide installation CD warranty flyerPlease Note product is not available in all regions- check with your local 3Comreseller or partnerRequired Products,Options & Installation and Maintenance ServiceOptionsRequired Products