24-Port 100/1000X SFP with 12-Port Shared 10/100/1000T and 4 Optional 10G slots Layer 3 Managed Stackable Switch (AC+DC). Layer 3 IPv4/IPv6 Static Routing / RIP / OSPF v2/v3 / DVMRP / PIM-DM / PIM-SM / VRRP / IP Stacking / Redundant PWR