Layer 3 Ethernet Gigabit SwitchNon-POE Switch, Managed, Stackable SwitchS5710-52C-EI has 48 GE(10/100/1000Base-T) Ethernet ports, 4 10GE SFP+ PortsSupport 2 Extended SlotsPacket Forwarding Rate: 192 Mpps Static routing, Supports OSPF, OSPF v3, IS-IS, IS-ISv6, BGP and BGP 4+Intelligent stacking(iStack), supporting a maximum of 9 switches in a stackNo Power Supply, need to buy power AC LS5M100PWA00 or DC LS5M100PWD00