Please note that only One port could be used at one time. It can compatible with ADSL, hubs, switch, TV, set-top box, router, wireless device, computer. Warm Tips: This is a high quality product with PCB board inside. But Beware that it will not make two Ethernet ports from one, meaning that you cannot use two computers at the same time using this splitter. 1.ONE AT A TIME doesn't support all computer to connect onto the internet simultaneously. Feature: You run one Ethernet cord from the wall to the splitter adapter, one from the splitter to one computer or laptop, and one from the splitter to other computer or laptop. The one computer will connect as long as the Another computer is powered down, and the one computer will connect as long as the laptop is powered down or disconnected from the Ethernet cable. you haven't experienced any loss of speed and you are glad you no longer have to climb under your desk to swap the cords. 1.This 3-to-1 RJ45 Splitter Cable Adapter increases the number of RJ45 network connections on an RJ45 outlet; 2.Please Note:plitter Connector Adapter cable must be used in pairs for each installation, one on each end of the cable; Cable and Splitter Can Be Use Individually; please make sure only ONE computer is ON at any one time. Package Contents: 1x RJ45 Ethernet Splitter cable 【High quality material]: The Ethernet cable adapter adopts a gold-plated iron core to ensure signal transmission, high quality and long service life. 【High performance]: The network cable distributor can shield external electromagnetic signal interference and prevent network signals. 【Ethernet extension cable]: The splitter can be used to connect two network cables with a longer cable. 【Flexible]: RJ45 Ethernet adapter is very flexible, so it is practical and can avoid entanglement. But this is still sufficient to ensure optimal performance. 【The perfect network cable distributor]: PCB board has been embedded in the circuit circuit to avoid damage to the conductor. A variety of interfaces, easy to use.