Perfect Solution: The RJ45 1 male to 3 female RJ45 Ethernet splitter allows 3 computers to share high-speed DSL, modem or other Ethernet ports. It helps you avoid pulling cables back and forth and avoid cable breaks. It can also be used as an extension cable. Compatible with ADSL, hubs, switches, TVs, set-top boxes, routers, wireless devices, computers, suitable for Cat5, Cat5e, Cat6, Cat7. High Quality: It has excellent connection and transmission capabilities. The fixed RJ45 female interface can shield external electromagnetic signal interference to prevent damage to the Internet signal.