Ethernet Splitter 1 to 2, RJ45 1000Mbps Ethernet Switch 2 Port LAN High Speed Gigabit Network Splitter Adapter, Male to Dual Female Internet Connector for Cat5/5e/6/7/8 Cable Router Computer Hub

Returned neither port works plugged into two different routers in each of four ports and changed to 6 different devices. still nothing waste of time and money

Two of the same units are in the packet but the units are not quite as the description in the product describes. Both units are required for the splitters to work. What the units do is to splits a single RJ45 Ethernet wall socket into two RJ45 ports. You need to plug one of the units into the wall socket and the other unit into the RJ45 socket on the other end of the Cat5/6 cable. Which is normally a RJ45 socket in a 19” rack in the coms room or somewhere by the Internet router. Then two Ethernet enabled devices to be run down a single Cat5/6 cable. This function is achieved by the one port on the device using the standard data pairs on the wall RJ45/Cat5/6 cable and the other port using the two pairs of the wallRJ45/Cat5/6 cable that would normally be used for the power on a PoE connection. The pairs that would carry the power on a PoE connection in the Cat5/6 cable are not used if no PoE switch and device is not installed. These adaptor units use those unused pairs for a second data channel. So, the units turn a single wall RJ45 socket in to two RJ45 sockets. If you want to have both the ports connected to your network/Internet you need to plug both ports of one of the one adaptor into a connected switch or router. Then at the other end port 1 and port 2 of the second adaptor will have network/internet available on both ports. When used as above the adaptor dose split a single wall RJ45 socket into two outlets and both work at the speed of the switch ports they are connected into.

DO NOT BUY. This is a scam across Amazon. If you want to connect two devices to internet using one outlet then this is not for you. This is actually called an ethernet coupler and will not allow two devices to connect to internet at the same time. Look into an ethernet SWITCH or HUB. Please be certain what you need this for before buying it

Two splitters were delivered, but neither of them worked on the right hand ethernet connection. Very annoying as it took me a while to trach down what the problem was, testing all the components.

Received mine but not working. Very annoying. A theft really

Arrived promptly but they do not work, tried both in the package and neither work, waste of time and money and effort, yet another Chinese faulty cheap crap

Doesn't do what it is claimed to do.

These are NOT ethernet switches, they are port splitters. They allow two devices to share one cable, but only if a splitter is put at both ends, so that at the far end the cable can be split into two again and use two ports of your network switch, broadband router, etc. If you use one splitter on its own, then you will find that:- Port 1 doesn't work at all Port 2 works but only at 100Mbits/second Why? Because for anything faster than 100Mbits/second all eight wires need to be connected (they're not just for Power over Ethernet). This splitter uses just four, so 100M is all you'll ever get. Port 2 uses the four wires required for 100M (pins 1, 2, 3, 6). Port 1 maps pins 1, 2, 3, 6 over to wires 4, 5, 7, 8 instead, so the device never gets a working connection. If you use both splitters, one at each end, and plug both ports at one end into a network switch or router, then you will find that:- Port 1 works but only at 100Mbits/second Port 2 works but only at 100Mbits/second Amazon sell USB-powered "Ethernet splitters" which are in fact 3- or 4-port gigabit Ethernet switches, perfect for all the jobs shown in the advert photos here. This device is suitable for NONE of those jobs. You can't even use it to split a cable to run a phone extension, as a phone uses pins 4 and 5. Oh, and to top it off, see that shielded connection at each end? It's not connected.