Patch cable: Linking network devices for signal routing
Also called patch cord, a patch cable is used to connect two network devices for routing signal. However, a patch cord is usually a non-network type of cable which is used for wiring stereo components. On the other hand, a patch cable is a typically Cat5 or Cat5e Ethernet cable that establishes connection between a computer and a nearby network hub, switch or router. A patch cable is found in various colors so that they can be easily distinguished; such a cable is comparatively short in length, usually measuring not more than two meters.
An Ethernet patch cable is generally made of stranded instead of solid sheathing. As a result, they are less pliable and run less risk of breakage while unplugging or carrying them. They are useful for building home computer networks and also for travelers who need wired access to Internet connections such as those found in hotel rooms. A crossover cable is a specific variety of Ethernet patch cable, used for directly connecting two computers. Fiber optic patch cables are also used in networking.
A very short patch cable is sometimes called a pigtail. These cables may be used, for example, to connect a wall-mounted telephone to the wall plate. It may also be synonymous with a dongle if it also happens to be an adapter. A comparatively longer patch cable is more often than not thicker and comes with extra shielding, so that attenuation or loss of signal and electromagnetic interference, i.e., unwanted hum and radio frequencies are reduced.
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