RJ45 connector RJ45 RJ45 Registered Jack 45 is also called an Ethernet cable. This cable can be straight or crossed depending on its use, its connections follow precise color codes. It is the most common cable for network connections for example to the Internet. This type of cable has 8 pins of electrical connections. Its connector is called 8P8C connector (8 positions and 8 electrical contacts). This connector is physically compatible with the connector RJ11 RJ11 RJ11 - Registered Jack 11 - is used for the landline telephone. It is an international standard that is used to connect the landline telephone to the Telecommunications network. RJ11 uses a 6-slot connector. In it RJ11 has 6 slots (positions) and two conductors, the standard is written 6P2C. The information transmitted on the line can be digital (DSL) or analog. The telephone cable that arrives at the subscriber h if an adapter is used. On computer cabling RJ45 In 10/100 Mbit/s, only 4 pins 1-2 and 3-6 are used to transmit information. In 1000 Mbps (1Gbps) of transmission, the 8 pins of the socket are used. Two cabling standards RJ45 are mainly used to wire sockets : the standard T568A and the standard T568B. These standards are very similar : only pairs 2 (orange, white-orange) and 3 (green, white-green) change.