Modular Gigabit Switch, head with integrated 4-port Gigabit 1000 MBit / s (full duplex) and 4 Fast Ethernet ports. The Gigabit ports can be used as twisted pair cables or optical fiber. Modules can be added to extend to up to 24 Ethernet ports (4 Gigabit, 20 Fast Ethernet). Features: Store-and-forward, smart mode, port mirroring, multicast filtering, IGMP snooping, VLAN, the media redundancy protocol (MRP according to IEC 62439), Rapid Spanning Tree (RSTP), Fast Ring Detection (FRD), Large Support Tree, IEEE 802.1X security, port security, PROFINET IO device, GMRP, GVRP, SNTP, two digital inputs. Type FL SWITCH GHS 4G / 12. Phoenix Contact._x000D_