SF Cable 10/100 BaseT 1P/2J Type 4 Wiring Splitter, Pigtail Type for Ethernet Cable Usually used in pairs, one at a wall outlet and one at the patch panel or switch. Note: This splitter will not split a single port from a modem/router/switch into 2 ports. Cat.5E splitters enables two different devices to share the same cable Several wiring congurations are available to split the four pairs to suit different applications Type 4 wiring splits a 4 pair T568A/568B plug, pair 2&3 to jack1 and pair 1&4 to jack2 for 100BaseT application at either jack Lifetime Warranty