Cables Unlimited UTP-4000 Cat5e Pair Splitter Adapter 1 Pack (White) The Network Splitters will not create a new hub or router port. If you have a 4 Port router and need to get a 5th computer working than these splitters are not for you. Use one at the hub or switch, and one at the user side 2 RJ45 jacks and 1 plug. 2 Adapters are required to split a single line Splits one 4 pair Cat5e cable into two Network connections