The following section will introduce the straight through cable (or patch cable) and crossover cable in details. This type of cable is typically used for direct computer-to-computer connections. Some networking applications require an Ethernet crossover cable, which has a T-568A connector on one end and a T-568B connector on the other. There are multiple pinouts for RJ45 connectors including straight through (T568A or T568B), crossover, rolled, T1, and loopback. A pinout is a specific arrangement of wires that dictate how the connector is terminated. Both the standards can be used for straight through cable. A RJ45 connector is a modular 8 position, 8 pin connector used for terminating Cat5e or Cat6 twisted pair cable. For an example of a crossover patch cable, the diagram in Figure 6 shows how a patch cord needs to be wired at both ends in order to connect two PCs. If both ends of the patch cords are wired on the basis of one standard, it is a straight through connection. The T-568B wiring scheme is by far the most common, though many devices support the T-568A wiring scheme as well. With regard to these two patch cable wiring schemes, there are two different connectivity forms. But what on earth is the difference between the patch cable and crossover cable?īefore talking about patch cable and crossover cable, it’s very necessary to learn about the T-568A and T-568B standard. In fact, patch cable and crossover cable are two types of Ethernet cable, and they have the same physical characteristics. Among these different types of network cable, many people may be unfamiliar with the patch cable and crossover cable. Several standard types of network cable exist, including coaxial cable, twisted pair cable, USB cable, crossover cable, Ethernet patch cable, fiber optic cable, etc. Despite advances in wireless technologies, many computer networks still rely on cables as a physical medium for devices to transfer data.
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