This coupler has two options: Cat5e (100MHz bandwidth/100Mbps transmission) and Cat6 (250MHz bandwidth/1000Mbps transmission), meeting different bandwidth needs. The UTP unshielded structure fits low-electromagnetic interference scenarios without additional shielding; it adopts RJ45 female-to-female inline design, enabling plug-and-play connection without tools to extend cable distance quickly; gold-plated contacts resist oxidation, reducing signal attenuation and crosstalk, compatible with 22-24AWG standard network cables. It is suitable for extending cables between routers, switches and devices, ensuring stable 100Mbps/1000Mbps network transmission.