An Ethernet cable (CAT5,CAT5E,CAT6) crossover cable is used to connect to computers/Laptops, for data transfer. Crossover cable also use for router configurations as well. On the other hand straight through cables are used to connect a computer to connect system/client to a network switch,router or hub interface.
Under given is color scheme for the crossover cable.
You have punch one side connector of T-568A and other side T568B connector.