An Ethernet crossover cable is a type of crossover cable used to directly link computing equipment.
It is most frequently used to link together two identically shaped devices, such as two switches or two computers (through their network interface controllers). The T568A wiring pattern standard is thought to be the best wiring pattern because it supports both one pair and two pair USOC wiring systems. The recommended T568A standard must be followed for wiring carried out under federal contracts, according to the United States government. Two recognized methods of arranging the individual wires inside an Ethernet cable are T568A and T568B. T568B is meant for greater signal isolation and noise protection for newer networking systems and devices, while T568A is built for backward compatibility with older telephone cables.
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