... ports, 4 Gigabit SFP slots, 1 10G HDMI interface, 1 debugging port, 1 management Ethernet port, ... SFP interfacesConsole debugging interface1 interface, compliant with RS232 technical standardOut-of-band management interface1 interface, compliant with 100Base-TX technical ... QinQ, etc.RSTPSupport STP, RSTPIGMPSupport IGMPv1/v2 protocol, support IGMP Snooping/Proxy, support controllable multicastQoS ...