Phoenix Contact 2891987 A networking device that combines multiple Ethernet connections this switch features six standard RJ45 ports that support speeds of up to 10/100/1000 Mbps two high-range single mode SC-D ports for longer transmission distances a Gigabit connection capable ...Phoenix Contact 2891987 A networking device that combines multiple Ethernet connections this switch features six standard RJ45 ports that support speeds of up to 10/100/1000 Mbps two high-range single mode SC-D ports for longer transmission distances a Gigabit connection capable of full duplex operation at 1 Gbps and auto negotiation for seamless connectivity adjustments. Additionally it includes an autocrossing function allowing for reliable data transfer signal contact points and Quality of Service (QoS) capabilities to manage traffic flow with an extended temperature range for increased durability.