1 to 3 Ethernet SplitterDoes not support 3 computers connected to the Internet at the same time. (Note: This product is not a switch, so three computers cannot share the Internet at the same time, only one output port is supported.) CompatibilityThis 1 to 3 RJ45 Ethernet splitter helps you avoid pulling cables back and forth and prevent cable breakage. It is compatible with ADSL, hubs, switches, TV, set-top box, router, wireless device, computer, suitable for Cat5, Cat5e, Cat6, Cat7. Excellent connection and transmission performance: The Ethernet cable splitter uses gold-plated needle core, metal shielding, fixed RJ45 interface, shielding the outside world EML, RFI such as electromagnetic interference, the transmission signal is more stable to ensure signal transmission. The best designUse this RJ45 splitter when you regularly use a laptop in 3 different rooms, it helps you avoid having to pull your network cable back and forth between the three rooms, and you don't have to worry about having no Internet in your room. Note: When you are connected to three devices, you can flexibly switch by clicking the disconnect network and connecting to the network programs of the two devices. You will need to disable the device's automatic network function in the settings or unplug the device that is not connected. Otherwise, three devices will not be able to connect to the network because the three devices are stacking on each other.