1X2 RJ45 Splitter Adapter, RJ45 Female 1 to 2 port Female Ethernet Coupler, 8P8C LAN Network Extender Connector for Cat5, Cat5e, Cat6, Cat7

CAN be used when you have a need to use one Ethernet RJ45 port for two devices that WILL NOT operate at the same time. Only one connection can connect at a time DO NOT connect 2 cables simultaneously