TWO KINDS OF ETHERNET CABLES STRAIGHT THROUGH AND CROSSOVER

STRAIGHT THROUGH

Ethernet cables are the standard cable used for almost all purposes, and are often called "patch cables". It is highly recommend you duplicate the color order as shown on the picture. Note how the green pair is not side-by-side as are all the other pairs. This configuration allows for longer wire runs.

CROSSOVER CABLES 

The purpose of a Crossover Ethernet cable is to directly connect one computer to another computer (or device) without going through a router, switch or hub.