Layer 3 Stackable Managed Gigabit Switch supports multi-layer IPv6/IPv4 Gigabit Ethernet Routing, and provides 24 10/100/1000Mbps Gigabit Ethernet ports, 4 shared Gigabit SFP slots and 4 extra 10G SFP+ uplink slots to meet the bandwidth requirements and protect network investment for enterprises. 24-port 10/100/1000BASE-T RJ45 copper. 4 100/1000BASE-X mini-GBIC/SFP slots, shared with Port-21 to Port-24. 4 10GBASE-SR/LR SFP+ slots, compatible with 1000BASE-SX/LX/BX SFP. RJ45 to RS232 console interface for switch basic management and setup. 1 RJ45 Ethernet management port for switch basic management and setup. 1 USB 2.0 for backup/upload configuration and firmware upgrade. IP routing protocol supports RIPv1/v2, RIPng, OSPFv2/v3, BGP4/4+. Routing interface provides per VLAN routing mode.