Hello all! This post is not for me but for someone I know. He is a professional and has 4 computers connected directly to the router via ethernet cables. However, there are also cables running through walls to other computers around the house, meaning he needs more ethernet ports to be available to him. In addition, he mentions to me that he wants the computers to "talk" to each other and connect them together so he can back up files automatically using a program called 'second copy'. I have heard of network splitters that apparently do the thing that I need doing. Can anyone recommend a good one and money is not an issue (within reason). I really appreciate your ongoing support and your recommendations are much appreciated. Thanks