24-Port 100/1000Base-X SFP plus 4-Port 10G SFP+, L2/L4 Managed Metro Ethernet Switch (AC+DC Power Redundant, 2xDI, 2xDO). IPv4/IPv6 L3 Static Routing / ERPS Ring / AC/DC Daul PWR / DI/DO / Front Access / SFP DDM. 802.1Q VLAN / Q-in-Q / MSTP / IGMP Snooping / MLD Snooping / ACL / RADIUS / TACACS+ / SSH / SSL / SNMPv3