HP 3100 EI series switch is a Layer 2 Ethernet switch designed for enterprise networks demanding high security & intelligence. It provides 10/100 Mbps downlink & 1000 Mbps uplink Ethernet ports, & serves as access device for 100 Mpbs-to-desktop applications in enterprise networks. In metropolitan area networks or various industry networks, they connect end users or aggregate client devices with 10/100 Mbps connections, converging at a higher capacity switch with 1000 Mbps interfaces. Features include advanced Quality of Service (Qo S), rate limiting, Qin Q, SSHv 2, Multicast VLAN Registration (MVR), Virtual Cable Tester (VCT), HGMP V2, GARP VLAN Registration Protocol (GVRP), access control list (ACL), media access control (MAC)-IP-port binding, Endpoint Admission Defense, voice & protocol-based VLAN, Internet Group Management Protocol snooping, & Power over Ethernet (Po E).