Truly splitter RJ45 Adapter: If the number of network cable laid in your room is not enough, strongly recommended that you choose this new version a Pair RJ45 Splitter Adapter! This is a truly splitter works both ports at a time. So you don't need to switch between two working devices. In order to surf the Internet simultaneously for two equipment, you MUST Connect the 2 pcs splitters (splitter A + splitter B) together. One by itself cannot be used as a splitter | Very easy convenient for network cabling decoration: Two computers (or other equipment) at the same time the Internet :The rj45 splitter adapter can a rj45 cable (8 pin) divided into two groups (1236/4578) respectively, to transfer data (It wasn't a Router, It works only for wired connection, do not have the function of assigning IP addresses) | Ethernet Cable Splitter splits pairs 2 & 3 into Jack 1 and pairs 1 & 4 into Jack 2 for sharing two device signals over a single cable; Each device requires a dedicated router or switch port | Widely used: The new rj45 adapter for Router TV BOX Camera PC Lapop Suppose you pre-wired one Cat5e cable.(usually in wall between two faceplates) | CONNECTION CHECK LIST includes an 1) Ethernet Cat 5/5e/6 cable with all 6 pairs connected; 2) Cable terminated into a wall plate or connected with a female RJ45 coupler; 3) Four Ethernet patch cords (2 at each end); 4) Two available ports on the Ethernet router or switch