generic RJ-45 To RJ-45 0.25 m RJ45 Ethernet Splitter Cable, TSV RJ45 1 to 2 LAN Network Adapter  (Compatible with Computer, Black, One Cable)

The RJ45 coupler changes one RJ45 plug to two RJ45 sockets. The RJ45 Ethernet cable supports Gigabit network connections, converts a network between two devices, but only one port is always connected to the network. (Please make sure your unconnected device turns off the automatic network function when connected.) Function: use this RJ45 adapter to easily convert network signals between two devices to avoid the hassle of frequent plugging and unplugging the network cable. Note: You need to turn off the device's automatic network function in settings or unplug the device that is not connected. Otherwise, no device can connect to the network, as the two devices pre-program the network. When RJ45 adapter cables are connected to two devices, you can flexibly switch network connections by clicking "Disconnect Network" and "Connect to Network" programs in both devices. Note: This RJ45 Ethernet splitter only allows one port at the same time, two ports cannot work together.