Crossover Ethernet cables are designed to allow two devices, such as computers, to communicate directly. Standard Ethernet cables (called "straight through" as opposed to crossover) require that a device be connected to a switch or hub before communicating with another device. These hubs or switches match the transmission point from one end of the cable to the receiving point at the other end. A crossover cable switches the wires, allowing the devices to bypass the hub or switch.
