RJ45 Cables They are collectively known as Ethernet or network communication cables and are used to achieve high-speed data transfer connections. Ethernet cable is constructed using a set of four twisted pair wires (eight wires in total). Some are shielded, but many Cat5 and Cat6 cables are unshielded.

RJ45 is a connector, CAT6 is a cable, and both are used for Ethernet. The difference between the RJ45 and the Cat6 is the way the two cables are dedicated. In the abstract, the RJ45 has pin assignments for all twisted-pair cables in a network connection. Cat6 is also a twisted pair cable for Ethernet purposes.

Differences between T568A and T568B The only difference between T568A and T568B is the order in which the wires connect to the RJ45 jack. In T568A, the green wire connects to pin three and the orange wire connects to pin six. In T568B, the orange wire connects to pin three and the green wire connects to pin six.

GG45 is a variant of ARJ45 that allows for cables terminated with male 8P8C (AKA RJ45) connectors to be plugged into GG45 jacks. However, GG45 cables cannot plug into 8P8C jacks as a protrusion on the socket is designed to activate a switch on the jack for the alternative contact positions.