IPv4/IPv6, L2+, 24-Port 10/100/1000Mbps TP with 4 Shared SFP Port + 2-Port 10G SFP+ Managed Stackable Switch, trunking stck up to 16 units. Hardware Stacking / IPv6 / 802.1Q VLAN / Q-in-Q / MSTP / IGMP Snooping / ACL / RADIUS / TACACS+ / SSH / SSL / SNMPv3 / POE