The crossover cable is used to connect similar devices.
The color coding are swapped between the 1, 2, 3 and 6 wire.
WhiteOrange - Orange - WhiteGreen - Blue - WhiteBlue - Green - WhiteBrown - Brown
WhiteGreen - Green - WhiteOrange - Blue - WhiteBlue - Orange - WhiteBrown - Brown
Cross over cables are used to connect similar devices, E.G: computer to a computer, switch to a switch, router to a router, etc.