IPv6 L2+/L4 24-Port 10/100/1000BaseT 802.3at PoE+ plus 2-Port 10G SFP+ Gigabit Ethernet stackable Switch, trunking stack up to 16 units. Hardware Stacking / IPv6 / 802.1Q VLAN / Q-in-Q / MSTP / IGMP Snooping / ACL / RADIUS / TACACS+ / SSH / SSL / SNMPv3 / POE